Electrical Spin Injection And Detection In Ge Nanowires And Toplogical Insulators

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Electrical Spin Injection and Detection in Ge Nanowires and Toplogical Insulators

Author : Jianshi Tang
Publisher :
ISBN 13 :
Total Pages : 209 pages
Book Rating : 4.:/5 (914 download)

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Book Synopsis Electrical Spin Injection and Detection in Ge Nanowires and Toplogical Insulators by : Jianshi Tang

Download or read book Electrical Spin Injection and Detection in Ge Nanowires and Toplogical Insulators written by Jianshi Tang and published by . This book was released on 2014 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continuous scaling of Si transistor feature size has driven the advancement of semiconductor technology in the past decades; however, such aggressive scaling is approaching the ultimate physical limit soon. Novel materials and devices are in urgent need to resolve a number of critical challenges. In particular, spintronic devices have been proposed and extensively studied by using the spin of electrons as another degree of freedom in devices for information processing, which enables advanced electronic devices that could potentially outperform Si devices with lower power dissipation and faster switching. In this work, the carrier and spin transport in Ge nanowires will be presented. Atomic-scale thermal annealing was established as a convenient approach to make high-quality nanoscale source/drain contacts in high-performance Ge nanowire transistors. Electrical spin injection and detection in both p- and n-type Ge nanowires were demonstrated using ferromagnetic Mn5Ge3 Schottky contacts and Fe/MgO tunnel junctions, respectively. The measured spin lifetime and spin diffusion length in Ge nanowires were much larger than those reported for bulk Ge, suggesting that the spin relaxation was significantly suppressed in nanowires. Furthermore, we studied the spin transport in topological insulators, in which the spin-momentum locking of helical surface states was preserved by the strong spin-orbit interaction and time-reversal symmetry. We demonstrated the electrical detection of the spin-polarized surface states conduction in topological insulator (Bi0.53Sb0.47)2Te3 using a Co/Al2O3 ferromagnetic tunnel contact. Voltage (resistance) hysteresis was observed when sweeping the magnetic field, and the two resistance states were reversible by changing the electric current direction. Our results showed a direct evidence of the charge current-induced spin polarization in the topological surface states. With the understanding of spin injection and detection, it might open up great opportunities to explore novel spintronic devices based on topological insulators and Ge nanowires.

Molecular Beam Epitaxy

Author : Mohamed Henini
Publisher : Elsevier
ISBN 13 : 0128121378
Total Pages : 790 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Molecular Beam Epitaxy by : Mohamed Henini

Download or read book Molecular Beam Epitaxy written by Mohamed Henini and published by Elsevier. This book was released on 2018-06-27 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Beam Epitaxy (MBE): From Research to Mass Production, Second Edition, provides a comprehensive overview of the latest MBE research and applications in epitaxial growth, along with a detailed discussion and ‘how to’ on processing molecular or atomic beams that occur on the surface of a heated crystalline substrate in a vacuum. The techniques addressed in the book can be deployed wherever precise thin-film devices with enhanced and unique properties for computing, optics or photonics are required. It includes new semiconductor materials, new device structures that are commercially available, and many that are at the advanced research stage. This second edition covers the advances made by MBE, both in research and in the mass production of electronic and optoelectronic devices. Enhancements include new chapters on MBE growth of 2D materials, Si-Ge materials, AIN and GaN materials, and hybrid ferromagnet and semiconductor structures. Condenses the fundamental science of MBE into a modern reference, speeding up literature review Discusses new materials, novel applications and new device structures, grounding current commercial applications with modern understanding in industry and research Includes coverage of MBE as mass production epitaxial technology and how it enhances processing efficiency and throughput for the semiconductor industry and nanostructured semiconductor materials research community

Electronic and Spintronic Transport in Germanium Nanostructures

Author : En-Shao Liu
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.:/5 (881 download)

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Book Synopsis Electronic and Spintronic Transport in Germanium Nanostructures by : En-Shao Liu

Download or read book Electronic and Spintronic Transport in Germanium Nanostructures written by En-Shao Liu and published by . This book was released on 2014 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The digital information processing system has benefited tremendously from the invention and development of complementary metal-oxide-semiconductor (CMOS) integrated circuits. The relentless scaling of the physical dimensions of transistors has been consistently delivering improved overall circuit density and performance every technology generation. However, the continuation of this trend is in question for silicon-based transistors when quantum mechanical tunneling becomes more relevant; further scaling in feature sizes can lead to increased leakage current and power dissipation. Numerous research efforts have been implemented to address these scaling challenges, either by aiming to increase the performance at the transistor level or to introduce new functionalities at the circuit level. In the first approach, novel materials and device structures are explored to improve the performance of CMOS transistors, including the use of high-mobility materials (e.g. III-V compounds and germanium) as the channel, and multi-gate structures. On the other hand, the overall circuit capability could be increased if other state variables are exploited in the electronic devices, such as the electron spin degree of freedom (e.g. spintronics). Here we explore the potential of germanium nanowires in both CMOS and beyond-CMOS applications, studying the electronic and spintronic transport in this material system. Germanium is an attractive replacement to silicon as the channel material in CMOS technology, thanks to its lighter effective electron and hole mass. The nanowire structures, directly synthesized using chemical vapor deposition, provide a natural platform for multi-gate structures in which the electrostatic control of the gate is enhanced. We present the realization and scaling properties of germanium-silicon-germanium core-shell nanowire n-type, [omega]-gate field-effect transistors (FETs). By studying the channel length dependence of NW FET characteristics, we conclude that the intrinsic channel resistance is the main limiting factor of the drive current of Ge NW n-FETs. Utilizing the electron spins in semiconductor devices can in principle enhance overall circuit performance and functionalities. Electrical injection of spin-polarized electrons into a semiconductor, large spin diffusion length, and an integration friendly platform are desirable ingredients for spin based-devices. Here we demonstrate lateral spin injection and detection in Ge NWs, by using ferromagnetic metal contacts and tunnel barriers for contact resistance engineering. We map out the contact resistance window for which spin transport is observed, manifestly showing the conductivity matching required for spin injection.

Journal of the Physical Society of Japan

Author :
Publisher :
ISBN 13 :
Total Pages : 1094 pages
Book Rating : 4./5 ( download)

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Book Synopsis Journal of the Physical Society of Japan by :

Download or read book Journal of the Physical Society of Japan written by and published by . This book was released on 2017 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetism and Accelerator-Based Light Sources

Author : Hervé Bulou
Publisher : Springer Nature
ISBN 13 : 3030646238
Total Pages : 208 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Magnetism and Accelerator-Based Light Sources by : Hervé Bulou

Download or read book Magnetism and Accelerator-Based Light Sources written by Hervé Bulou and published by Springer Nature. This book was released on 2021-02-17 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book collects the contributions of the seventh school on Magnetism and Synchrotron Radiation held in Mittelwihr, France, from 7 to 12 October 2018. It starts with an introduction to the physics of modern X-ray sources followed by a general overview of magnetism. Next, light / matter interaction in the X-ray range is covered with emphasis on different types of angular dependence of X-ray absorption spectroscopy and scattering. In the end, two domains where synchrotron radiation-based techniques led to new insights in condensed matter physics, namely spintronics and superconductivity, are discussed. The book is intended for advanced students and researchers to get acquaintance with the basic knowledge of X-ray light sources and to step into synchrotron-based techniques for magnetic studies in condensed matter physics or chemistry.

Spin Current

Author : Sadamichi Maekawa
Publisher : Oxford University Press
ISBN 13 : 0198787073
Total Pages : 541 pages
Book Rating : 4.1/5 (987 download)

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Book Synopsis Spin Current by : Sadamichi Maekawa

Download or read book Spin Current written by Sadamichi Maekawa and published by Oxford University Press. This book was released on 2017 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a new branch of physics and technology, called spin-electronics or spintronics, the flow of electrical charge (usual current) as well as the flow of electron spin, the so-called "spin current", are manipulated and controlled together. This book is intended to provide an introduction and guide to the new physics and applications of spin current.

Magnetic Multilayers

Author : Lawrence H Bennett
Publisher : World Scientific
ISBN 13 : 9814571067
Total Pages : 397 pages
Book Rating : 4.8/5 (145 download)

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Book Synopsis Magnetic Multilayers by : Lawrence H Bennett

Download or read book Magnetic Multilayers written by Lawrence H Bennett and published by World Scientific. This book was released on 1994-12-16 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on an increasingly important area of materials science and technology, namely, the fabrication and properties of artificial materials where slabs of magnetized materials are sandwiched between slabs of nonmagnetized materials. It includes reviews by experts on the theory and descriptions of the various experimental techniques such as those using nuclear or electron spin probes, as well as optical, X-ray or neutron probes. It also reviews potential applications such as the giant magnetoresistance, and one specialized preparation technique, the electrodeposition. The various chapters are tutorial in nature, making the subject accessible to nonspecialists, as well as useful to researchers in the field.

Nanowire Field Effect Transistors: Principles and Applications

Author : Dae Mann Kim
Publisher : Springer Science & Business Media
ISBN 13 : 1461481244
Total Pages : 292 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Nanowire Field Effect Transistors: Principles and Applications by : Dae Mann Kim

Download or read book Nanowire Field Effect Transistors: Principles and Applications written by Dae Mann Kim and published by Springer Science & Business Media. This book was released on 2013-10-23 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Nanowire Field Effect Transistor: Basic Principles and Applications” places an emphasis on the application aspects of nanowire field effect transistors (NWFET). Device physics and electronics are discussed in a compact manner, together with the p-n junction diode and MOSFET, the former as an essential element in NWFET and the latter as a general background of the FET. During this discussion, the photo-diode, solar cell, LED, LD, DRAM, flash EEPROM and sensors are highlighted to pave the way for similar applications of NWFET. Modeling is discussed in close analogy and comparison with MOSFETs. Contributors focus on processing, electrostatic discharge (ESD) and application of NWFET. This includes coverage of solar and memory cells, biological and chemical sensors, displays and atomic scale light emitting diodes. Appropriate for scientists and engineers interested in acquiring a working knowledge of NWFET as well as graduate students specializing in this subject.

Materials for Optoelectronics

Author : Maurice Quillec
Publisher : Springer Science & Business Media
ISBN 13 : 9780792396659
Total Pages : 404 pages
Book Rating : 4.3/5 (966 download)

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Book Synopsis Materials for Optoelectronics by : Maurice Quillec

Download or read book Materials for Optoelectronics written by Maurice Quillec and published by Springer Science & Business Media. This book was released on 1996-01-31 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optoelectronics ranks one of the highest increasing rates among the different industrial branches. This activity is closely related to devices which are themselves extremely dependent on materials. Indeed, the history of optoelectronic devices has been following closely that of the materials. KLUWER Academic Publishers has thus rightly identified "Materials for Optoelectronics" as a good opportunity for a book in the series entitled "Electronic Materials; Science and Technology". Although a sound background in solid state physics is recommended, the authors have confined their contribution to a graduate student level, and tried to define any concept they use, to render the book as a whole as self-consistent as possible. In the first section the basic aspects are developed. Here, three chapters consider semiconductor materials for optoelectronics under various aspects. Prof. G. E. Stillman begins with an introduction to the field from the point of view of the optoelectronic market. Then he describes how III-V materials, especially the Multi Quantum Structures meet the requirements of optoelectronic functions, including the support of microelectronics for optoelectronic integrated circuits. In chapter 2, Prof.

The Role of Topology in Materials

Author : Sanju Gupta
Publisher :
ISBN 13 : 9783319765976
Total Pages : 297 pages
Book Rating : 4.7/5 (659 download)

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Book Synopsis The Role of Topology in Materials by : Sanju Gupta

Download or read book The Role of Topology in Materials written by Sanju Gupta and published by . This book was released on 2018 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most important advances in the class of topological materials and discusses the topological characterization, modeling and metrology of materials. Further, it addresses currently emerging characterization techniques such as optical and acoustic, vibrational spectroscopy (Brillouin, infrared, Raman), electronic, magnetic, fluorescence correlation imaging, laser lithography, small angle X-ray and neutron scattering and other techniques, including site-selective nanoprobes. The book analyzes the topological aspects to identify and quantify these effects in terms of topology metrics. The topological materials are ubiquitous and range from (i) de novo nanoscale allotropes of carbons in various forms such as nanotubes, nanorings, nanohorns, nanowalls, peapods, graphene, etc. to (ii) metallo-organic frameworks, (iii) helical gold nanotubes, (iv) Möbius conjugated polymers, (v) block co-polymers, (vi) supramolecular assemblies, to (vii) a variety of biological and soft-matter systems, e.g. foams and cellular materials, vesicles of different shapes and genera, biomimetic membranes, and filaments, (viii) topological insulators and topological superconductors, (ix) a variety of Dirac materials including Dirac and Weyl semimetals, as well as (x) knots and network structures. Topological databases and algorithms to model such materials have been also established in this book. In order to understand and properly characterize these important emergent materials, it is necessary to go far beyond the traditional paradigm of microscopic structure-property-function relationships to a paradigm that explicitly incorporates topological aspects from the outset to characterize and/or predict the physical properties and currently untapped functionalities of these advanced materials. Simulation and modeling tools including quantum chemistry, molecular dynamics, 3D visualization and tomography are also indispensable. These concepts have found applications in condensed matter physics, materials science and engineering, physical chemistry and biophysics, and the various topics covered in the book have potential applications in connection with novel synthesis techniques, sensing and catalysis. As such, the book offers a unique resource for graduate students and researchers alike.

Spintronics - from GMR to Quantum Information

Author : Stefan Blügel
Publisher :
ISBN 13 : 9783893365593
Total Pages : 676 pages
Book Rating : 4.3/5 (655 download)

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Book Synopsis Spintronics - from GMR to Quantum Information by : Stefan Blügel

Download or read book Spintronics - from GMR to Quantum Information written by Stefan Blügel and published by . This book was released on 2009 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Spintronics

Author : Yongbing Xu
Publisher : Springer
ISBN 13 : 9789400768918
Total Pages : 0 pages
Book Rating : 4.7/5 (689 download)

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Book Synopsis Handbook of Spintronics by : Yongbing Xu

Download or read book Handbook of Spintronics written by Yongbing Xu and published by Springer. This book was released on 2015-10-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over two volumes and 1500 pages, the Handbook of Spintronics will cover all aspects of spintronics science and technology, including fundamental physics, materials properties and processing, established and emerging device technology and applications. Comprising 60 chapters from a large international team of leading researchers across academia and industry, the Handbook provides readers with an up-to-date and comprehensive review of this dynamic field of research. The opening chapters focus on the fundamental physical principles of spintronics in metals and semiconductors, including an introduction to spin quantum computing. Materials systems are then considered, with sections on metallic thin films and multilayers, magnetic tunnelling structures, hybrids, magnetic semiconductors and molecular spintronic materials. A separate section reviews the various characterisation methods appropriate to spintronics materials, including STM, spin-polarised photoemission, x-ray diffraction techniques and spin-polarised SEM. The third part of the Handbook contains chapters on the state of the art in device technology and applications, including spin valves, GMR and MTJ devices, MRAM technology, spin transistors and spin logic devices, spin torque devices, spin pumping and spin dynamics and other topics such as spin caloritronics. Each chapter considers the challenges faced by researchers in that area and contains some indications of the direction that future work in the field is likely to take. This reference work will be an essential and long-standing resource for the spintronics community.

Advanced Topological Insulators

Author : Huixia Luo
Publisher : John Wiley & Sons
ISBN 13 : 111940732X
Total Pages : 400 pages
Book Rating : 4.1/5 (194 download)

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Book Synopsis Advanced Topological Insulators by : Huixia Luo

Download or read book Advanced Topological Insulators written by Huixia Luo and published by John Wiley & Sons. This book was released on 2019-03-12 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first pedagogical synthesis of the field of topological insulators and superconductors, one of the most exciting areas of research in condensed matter physics. Presenting the latest developments, while providing all the calculations necessary for a self-contained and complete description of the discipline, it is ideal for researchers and graduate students preparing to work in this area, and it will be an essential reference both within and outside the classroom. The book begins with the fundamental description on the topological phases of matter such as one, two- and three-dimensional topological insulators, and methods and tools for topological material's investigations, topological insulators for advanced optoelectronic devices, topological superconductors, saturable absorber and in plasmonic devices. Advanced Topological Insulators provides researchers and graduate students with the physical understanding and mathematical tools needed to embark on research in this rapidly evolving field.

Introduction to Graphene-Based Nanomaterials

Author : Luis E. F. Foa Torres
Publisher : Cambridge University Press
ISBN 13 : 1107030838
Total Pages : 425 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Introduction to Graphene-Based Nanomaterials by : Luis E. F. Foa Torres

Download or read book Introduction to Graphene-Based Nanomaterials written by Luis E. F. Foa Torres and published by Cambridge University Press. This book was released on 2014-01-23 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed primer describing the most effective theoretical and computational methods and tools for simulating graphene-based systems.

Oxide Electronics

Author : Asim K. Ray
Publisher : John Wiley & Sons
ISBN 13 : 1119529476
Total Pages : 628 pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis Oxide Electronics by : Asim K. Ray

Download or read book Oxide Electronics written by Asim K. Ray and published by John Wiley & Sons. This book was released on 2021-04-12 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide Electronics Multiple disciplines converge in this insightful exploration of complex metal oxides and their functions and properties Oxide Electronics delivers a broad and comprehensive exploration of complex metal oxides designed to meet the multidisciplinary needs of electrical and electronic engineers, physicists, and material scientists. The distinguished author eschews complex mathematics whenever possible and focuses on the physical and functional properties of metal oxides in each chapter. Each of the sixteen chapters featured within the book begins with an abstract and an introduction to the topic, clear explanations are presented with graphical illustrations and relevant equations throughout the book. Numerous supporting references are included, and each chapter is self-contained, making them perfect for use both as a reference and as study material. Readers will learn how and why the field of oxide electronics is a key area of research and exploitation in materials science, electrical engineering, and semiconductor physics. The book encompasses every application area where the functional and electronic properties of various genres of oxides are exploited. Readers will also learn from topics like: Thorough discussions of High-k gate oxide for silicon heterostructure MOSFET devices and semiconductor-dielectric interfaces An exploration of printable high-mobility transparent amorphous oxide semiconductors Treatments of graphene oxide electronics, magnetic oxides, ferroelectric oxides, and materials for spin electronics Examinations of the calcium aluminate binary compound, perovoksites for photovoltaics, and oxide 2Degs Analyses of various applications for oxide electronics, including data storage, microprocessors, biomedical devices, LCDs, photovoltaic cells, TFTs, and sensors Suitable for researchers in semiconductor technology or working in materials science, electrical engineering, and physics, Oxide Electronics will also earn a place in the libraries of private industry researchers like device engineers working on electronic applications of oxide electronics. Engineers working on photovoltaics, sensors, or consumer electronics will also benefit from this book.

Three-Dimensional Magnonics

Author : Gianluca Gubbiotti
Publisher : CRC Press
ISBN 13 : 1000024547
Total Pages : 264 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Three-Dimensional Magnonics by : Gianluca Gubbiotti

Download or read book Three-Dimensional Magnonics written by Gianluca Gubbiotti and published by CRC Press. This book was released on 2019-07-10 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnonics, a research field that uses spin waves, collective excitations of ordered magnetic materials, or magnons (their quanta) as a tool for signal processing, communication, and computation, has rapidly grown during the past decade because of the low-energy consumption and potential compatibility with next-generation circuits beyond CMOS electronics. The interest in 3D magnonic nanostructures follows the latest trend in conventional electronics based on expansion from 2D planar to 3D vertically integrated structures. To remain on the same technological level, a similar expansion should be realized in magnonics. Following this trend, this book provides an overview of recent developments in the exploitation of the third dimension in magnonics, with special focus on the propagation of spin waves in layered magnonic crystals, spin textures, curved surfaces, 3D nano-objects, and cavity magnonics.

Atomic Layer Deposition for Semiconductors

Author : Cheol Seong Hwang
Publisher : Springer Science & Business Media
ISBN 13 : 146148054X
Total Pages : 266 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Atomic Layer Deposition for Semiconductors by : Cheol Seong Hwang

Download or read book Atomic Layer Deposition for Semiconductors written by Cheol Seong Hwang and published by Springer Science & Business Media. This book was released on 2013-10-18 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering thorough coverage of atomic layer deposition (ALD), this book moves from basic chemistry of ALD and modeling of processes to examine ALD in memory, logic devices and machines. Reviews history, operating principles and ALD processes for each device.