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Author : William John Hodgson Leyland
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)
Download or read book Spin Transport and Relaxation in Semiconductor Heterostructures written by William John Hodgson Leyland and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Abdel Isakovic
Publisher :
ISBN 13 :
Total Pages : 398 pages
Book Rating : 4.:/5 (319 download)
Download or read book Spin Transport in Ferromagnet-semiconductor Heterostructures written by Abdel Isakovic and published by . This book was released on 2003 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xiaohua Lou
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.:/5 (319 download)
Download or read book Electrical Detection of Spin Transport in Ferromagnet-semiconductor Heterostructures written by Xiaohua Lou and published by . This book was released on 2007 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Evgeny Y. Tsymbal
Publisher : CRC Press
ISBN 13 : 0429784376
Total Pages : 530 pages
Book Rating : 4.4/5 (297 download)
Download or read book Spintronics Handbook, Second Edition: Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2019-05-20 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition offers an update on the single most comprehensive survey of the two intertwined fields of spintronics and magnetism, covering the diverse array of materials and structures, including silicon, organic semiconductors, carbon nanotubes, graphene, and engineered nanostructures. It focuses on seminal pioneering work, together with the latest in cutting-edge advances, notably extended discussion of two-dimensional materials beyond graphene, topological insulators, skyrmions, and molecular spintronics. The main sections cover physical phenomena, spin-dependent tunneling, control of spin and magnetism in semiconductors, and spin-based applications.
Author : Evgeny Y. Tsymbal
Publisher : CRC Press
ISBN 13 : 0429784384
Total Pages : 619 pages
Book Rating : 4.4/5 (297 download)
Download or read book Spintronics Handbook, Second Edition: Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2019-05-20 with total page 619 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition offers an update on the single most comprehensive survey of the two intertwined fields of spintronics and magnetism, covering the diverse array of materials and structures, including silicon, organic semiconductors, carbon nanotubes, graphene, and engineered nanostructures. It focuses on seminal pioneering work, together with the latest in cutting-edge advances, notably extended discussion of two-dimensional materials beyond graphene, topological insulators, skyrmions, and molecular spintronics. The main sections cover physical phenomena, spin-dependent tunneling, control of spin and magnetism in semiconductors, and spin-based applications.
Author : Evgeny Y. Tsymbal
Publisher : CRC Press
ISBN 13 : 1439803773
Total Pages : 809 pages
Book Rating : 4.4/5 (398 download)
Download or read book Handbook of Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2011-08-25 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past several decades, the research on spin transport and magnetism has led to remarkable scientific and technological breakthroughs, including Albert Fert and Peter Grünberg’s Nobel Prize-winning discovery of giant magnetoresistance (GMR) in magnetic metallic multilayers. Handbook of Spin Transport and Magnetism provides a comprehensive, balanced account of the state of the art in the field known as spin electronics or spintronics. It reveals how key phenomena first discovered in one class of materials, such as spin injection in metals, have been revisited decades later in other materials systems, including silicon, organic semiconductors, carbon nanotubes, graphene, and carefully engineered nanostructures. The first section of the book offers a historical and personal perspective of the field written by Nobel Prize laureate Albert Fert. The second section addresses physical phenomena, such as GMR, in hybrid structures of ferromagnetic and normal metals. The third section discusses recent developments in spin-dependent tunneling, including magnetic tunnel junctions with ferroelectric barriers. In the fourth section, the contributors look at how to control spin and magnetism in semiconductors. In the fifth section, they examine phenomena typically found in nanostructures made from metals, superconductors, molecular magnets, carbon nanotubes, quantum dots, and graphene. The final section covers novel spin-based applications, including advanced magnetic sensors, nonvolatile magnetoresistive random access memory, and semiconductor spin-lasers. The techniques and materials of spintronics have rapidly evolved in recent years, leading to vast improvements in hard drive storage and magnetic sensing. With extensive cross-references between chapters, this seminal handbook provides a complete guide to spin transport and magnetism across various classes of materials and structures.
Download or read book Spin Transport in Semiconductor Heterostructures written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of the research performed under this grant has been the investigation of spin transport in magnetic semiconductor heterostructures. The interest in these systems is motivated both by their intriguing physical properties, as the physical embodiment of a spin-polarized Fermi liquid, as well as by their potential applications as spintronics devices. In our work we have analyzed several different problems that affect the spin dynamics in single and bi-layer spin-polarized two-dimensional (2D) systems. The topics of interests ranged from the fundamental aspects of the electron-electron interactions, to collective spin and charge density excitations and spin transport in the presence of the spin-orbit coupling. The common denominator of these subjects is the impact at the macroscopic scale of the spin-dependent electron-electron interaction, which plays a much more subtle role than in unpolarized electron systems. Our calculations of several measurable parameters, such as the excitation frequencies of magneto-plasma modes, the spin mass, and the spin transresistivity, propose realistic theoretical estimates of the opposite-spin many-body effects, in particular opposite-spin correlations, that can be directly connected with experimental measurements.
Author : Lan Qing
Publisher :
ISBN 13 :
Total Pages : 141 pages
Book Rating : 4.:/5 (96 download)
Download or read book Spin Transport in Semiconductors Manipulated by Extrinsic Factors written by Lan Qing and published by . This book was released on 2015 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Spin transport in semiconductors is of fundamental research interest not only for addressing basic solid state physics aspects, but also for the already demonstrated potential it has in electronic and storage technologies. The centerpiece of spin-dependent transport focuses on the spin relaxation. So far, spin lifetimes deduced from many spin transport measurements indicate certain discrepancies with the theoretical values developed from intrinsic electron-phonon interactions in equilibrium. Detailed investigation for each of the experiments is needed in order to fill the gap, and here we show how these spin transports in semiconductors can be manipulated by extrinsic factors, such as external field, doping-induced exchange, and device structure. The comprehensive consideration of all these influences results in a consistent agreement between theory and experiment, as well as a transparent physical picture. Electric fields can drive electrons away from thermal equilibrium and substantially enhance the dominant spin relaxation mechanism in silicon and germanium. Empirical results from spin transport devices with ballistic injection confirms our theory for such strong spin depolarization. It enables the optimization of spintronics devices, as we can choose the electric field that optimizes the tradeoff between fast transport across the device and signal loss due to spin depolarization. The scenario is more promising when applying strainches Meanwhile, at low temperatures conduction electrons accelerated by electric fields can also excite the localized electrons frozen at the doped impurities via inelastic scattering. Promotion into highly spin-mixed localized states leads to spin depolarization that couples strongly to the conduction electrons by exchange interaction. This novel spin relaxation mechanism is a key ingredient when one tries to model the anomalous behaviors observed at low temperatures. The exchange between conduction and localized electrons can play an important role as well in electrical Hanle effect measurement. A unique Lorentzian-shaped signal is discovered in both theory and experiment. Its shape does not directly relate to spin relaxation as commonly believed. This effect together with the briefly discussed impurity-assisted tunneling magnetoresistance elucidates the reliability of the spin lifetime extracted from a three-terminal device geometry. The spin dynamics with extrinsic factors developed in this thesis possesses broad applications. We show two practical cases in optical orientation that exhibit an outlook beyond spin transport. The examined evolutions of hot electrons and the corresponding spin properties reveal the underlying physics of crystal symmetry and band structures. The method can be further utilized to complete the picture of spin relaxation in semiconductors, and to analyze the extrinsic spin Hall effect"--Pages viii-ix.
Author : Supriyo Bandyopadhyay
Publisher : World Scientific
ISBN 13 : 9813149833
Total Pages : 271 pages
Book Rating : 4.8/5 (131 download)
Download or read book Contemporary Topics In Spintronics written by Supriyo Bandyopadhyay and published by World Scientific. This book was released on 2017-02-02 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: The success of spintronics — the science and technology of storing, processing, sensing and communicating information using the quantum mechanical spin degree of freedom of an electron — is critically dependent on the ability to inject, detect and manipulate spins in semiconductors either by incorporating ferromagnetic materials into device architectures or by using external magnetic and electric fields. In spintronics, the controlled generation and manipulation of spin polarization in nonmagnetic semiconductors is required for the design of spin-sensitive devices ranging from spin-qubit hosts, quantum memory and gates, quantum teleporters, spin polarizers and filters, spin-field-effect-transistors, and spin-splitters, among others. One of the major challenges of spintronics is to control the creation, manipulation, and detection of spin polarized currents by purely electrical means. Another challenge is to preserve spin coherence in a device for the longest time or over the longest distance in order to produce reliable spintronic processors. These challenges remain daunting, but some progress has been made recently in overcoming some of the steepest obstacles. This book covers some of the recent advances in the field of spintronics using semiconductors.
Author : Evgeny Y. Tsymbal
Publisher : CRC Press
ISBN 13 : 042980525X
Total Pages : 555 pages
Book Rating : 4.4/5 (298 download)
Download or read book Spintronics Handbook, Second Edition: Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2019-06-26 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spintronics Handbook, Second Edition offers an update on the single most comprehensive survey of the two intertwined fields of spintronics and magnetism, covering the diverse array of materials and structures, including silicon, organic semiconductors, carbon nanotubes, graphene, and engineered nanostructures. It focuses on seminal pioneering work, together with the latest in cutting-edge advances, notably extended discussion of two-dimensional materials beyond graphene, topological insulators, skyrmions, and molecular spintronics. The main sections cover physical phenomena, spin-dependent tunneling, control of spin and magnetism in semiconductors, and spin-based applications. Features: Presents the most comprehensive reference text for the overlapping fields of spintronics (spin transport) and magnetism. Covers the full spectrum of materials and structures, from silicon and organic semiconductors to carbon nanotubes, graphene, and engineered nanostructures. Extends coverage of two-dimensional materials beyond graphene, including molybdenum disulfide and study of their spin relaxation mechanisms Includes new dedicated chapters on cutting-edge topics such as spin-orbit torques, topological insulators, half metals, complex oxide materials and skyrmions. Discusses important emerging areas of spintronics with superconductors, spin-wave spintronics, benchmarking of spintronics devices, and theory and experimental approaches to molecular spintronics. Evgeny Tsymbal's research is focused on computational materials science aiming at the understanding of fundamental properties of advanced ferromagnetic and ferroelectric nanostructures and materials relevant to nanoelectronics and spintronics. He is a George Holmes University Distinguished Professor at the Department of Physics and Astronomy of the University of Nebraska-Lincoln (UNL), Director of the UNL’s Materials Research Science and Engineering Center (MRSEC), and Director of the multi-institutional Center for NanoFerroic Devices (CNFD). Igor Žutić received his Ph.D. in theoretical physics at the University of Minnesota. His work spans a range of topics from high-temperature superconductors and ferromagnetism that can get stronger as the temperature is increased, to prediction of various spin-based devices. He is a recipient of 2006 National Science Foundation CAREER Award, 2005 National Research Council/American Society for Engineering Education Postdoctoral Research Award, and the National Research Council Fellowship (2003-2005). His research is supported by the National Science Foundation, the Office of Naval Research, the Department of Energy, and the Airforce Office of Scientific Research.
Author : David Awschalom
Publisher : Springer Science & Business Media
ISBN 13 : 9783540421764
Total Pages : 338 pages
Book Rating : 4.4/5 (217 download)
Download or read book Semiconductor Spintronics and Quantum Computation written by David Awschalom and published by Springer Science & Business Media. This book was released on 2002-06-13 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The manipulation of electric charge in bulk semiconductors and their heterostructures is the basis of nearly all modern electronic and opto-electronic devices. Recent studies of spin-dependent phenomena in semiconductors open the door to technologies that harness the spin of the electron in semiconductor devices. In addition to providing spin-dependent analogies that extend existing electronic devices into the realm of semiconductor "spintronics," the spin degree of freedom also offers prospects for fundamentally new functionality in the quantum domain, ranging from storage to computation. This is likely to play a crucial role in the information technologies in the 21st century. This book, written by a team of experts, provides an overview of emerging concepts in this rapidly developing field. The topics range from spin transport and injection in semiconductors and their heterostructures to coherent processes and computation in semiconductor quantum structures and microcavities.
Author : Jing Li
Publisher :
ISBN 13 : 9781267249494
Total Pages : pages
Book Rating : 4.2/5 (494 download)
Download or read book Extrinsic Spin Relaxation in Silicon Spin Transport Devices written by Jing Li and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon is one promising semiconductor material to realize spin-based devices and circuits, not only because of its entrenchment in present-day charge-based microelectronics industry, but also due to its exceptionally long electron spin lifetime. This intrinsic spin lifetime of conduction electrons in bulk silicon was estimated by Yafet's theory assuming that intravalley electron-acoustic phonon scattering is the dominant spin-flip mechanism at equilibrium, which agrees with experimental results from early electron spin resonance measurements and recent spin transport measurements using ballistic hot-electron injection and detection. This dissertation details experimental observations of substantial electron spin relaxation in silicon due to extrinsic effects which do not originate from intravalley electron-acoustic phonon scattering. Spin transport in high electric field demonstrates a field-induced spin relaxation by phonon emission process during which electrons are scattered between conduction band valleys that reside on different crystal axes. Charge and spin transport measurements below 25 K demonstrate the existence of anomalous spin relaxation which stems from electron spin exchange interaction with bulk neutral donor spin. Using a two-dimensional finite-difference modeling scheme, spin relaxation during lateral spin transport near Si/SiO 2 electrostatic gate interface is confirmed to be a result of enhanced momentum scattering and exchange coupling related to interfacial defects. These findings of extrinsic spin relaxation mechanisms are important to the design of spin-based semiconductor devices where the condition of equilibrium and the symmetry of bulk silicon lattice are necessarily broken.
Author : Yunong Qi
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (547 download)
Download or read book Semiclassical Theory of Spin Transport in Metallic and Semiconductor Heterostructures written by Yunong Qi and published by . This book was released on 2003 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, transport properties of magnetic nanostructures have been one of the most active research areas of Condensed Matter Physics. Many emerging scientific issues are not satisfactorily answered. This Thesis will be focused on one of the most important theoretical problems in magnetic nanostructures; namely, it aims at a better understanding of magnetotransport phenomena. Two most common scattering mechanisms, diffusive scattering in the bulk of the layers (or particles) and ballistic scattering at the interface (or boundaries) are believed to be the main sources of magnetoresistance (or resistance). Previously, one usually takes the bulk and interface scattering either ballistically or diffusively, but not both. In a realistic experimental structure, both scatterings exist and they are equally important. A unified theory of spin transport was established by using semiclassical Boltzmann equation approach in this Thesis. This work significantly generalizes previous scattering theories and can be broadly used to understand the magnetotransport properties of a variety of magnetic nanostructures. With this formalism, the interface and bulk scatterings can be successfully treated on equal footing. The conductance and magnetoresistance of a pinhole structure, then, can be calculated. It is found that both conductance and magnetoresistance can be optimized to desired values for magnetic recording application. To extend our model to semiconductor heterostructures, a more generalized, theoretical model has been developed in the study of non-zero magnetic and electric fields effects on spin transport properties. It is found that the spin-diffusion equation for non-equilibrium spin density and spin current density involves a number of new relevant length scales that explicitly depend on the electric and magnetic fields. The set of macroscopic equations can be used to address a very broad range of spin transport problems from magnetic, metallic multilayers to semiconductor heterostructures. The subject of spin transport we have completed is not only fundamentally interesting from the viewpoint of theoretical and material physics, but also greatly important for the development of emerging technology such as magnetic random access memory (MRAM) (which is a novel, non-volatile device and potential use for storing information in the computer), transistor, and possibly quantum computers.
Author : James Patrick McGuire
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (318 download)
Download or read book The Creation and Transport of Spin-polarized Carriers in Semiconductor Heterostructures written by James Patrick McGuire and published by . This book was released on 2004 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Evgeny Y. Tsymbal
Publisher : CRC Press
ISBN 13 : 1439803781
Total Pages : 797 pages
Book Rating : 4.4/5 (398 download)
Download or read book Handbook of Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2016-04-19 with total page 797 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past several decades, the research on spin transport and magnetism has led to remarkable scientific and technological breakthroughs, including Albert Fert and Peter Grunberg's Nobel Prize-winning discovery of giant magnetoresistance (GMR) in magnetic metallic multilayers. Handbook of Spin Transport and Magnetism provides a comprehensive, bal
Author : Zeev Valy Vardeny
Publisher : CRC Press
ISBN 13 : 1439806578
Total Pages : 354 pages
Book Rating : 4.4/5 (398 download)
Download or read book Organic Spintronics written by Zeev Valy Vardeny and published by CRC Press. This book was released on 2010-04-09 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major development efforts in organic materials research has grown for an array of applications. Organic spintronics, in particular, has flourished in the area of organic magneto-transport. Reflecting the main avenues of advancement in this arena, this volume explores spin injection and manipulation in organic spin valves, the magnetic field effect in organic light-emitting diodes (OLEDs), the spin transport effect in relation to spin manipulation, organic magnets as spin injection electrodes in organic spintronics devices, the coherent control of spins in organic devices using the technique of electronically detected magnetic resonance, and the possibility of using organic spin valves as sensors.
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (227 download)
Download or read book Interface Sensitive Study of Spin Injection, Transport and Relaxation in Ferromagnet-Semiconductor Quantum Well Systems for Spin Applications written by and published by . This book was released on 2006 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report, we present our observation of optically excited nonequilibrium spin dynamics in (Ga, Mn)As at room temperature. Our observation demonstrates two different regimes: 1) an initial ultrafast oscillatory behavior during the subpicosecond and picosecond time scale after photo-excitation, which we find to be related to photo-induced carrier (electrons and holes) spins; 2) a slow demagnetization over hundreds of picoseconds, which, we believe, results from not only strong-coupled hole-Mn spins but also interactions between electron spins and Mn moments.
