Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Spin Dependent Transport Phenomena In Magnetic Nanostructures
Download Spin Dependent Transport Phenomena In Magnetic Nanostructures full books in PDF, epub, and Kindle. Read online Spin Dependent Transport Phenomena In Magnetic Nanostructures ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Spin Dependent Transport in Magnetic Nanostructures by : Sadamichi Maekawa
Download or read book Spin Dependent Transport in Magnetic Nanostructures written by Sadamichi Maekawa and published by CRC Press. This book was released on 2002-07-11 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: In magnetic systems of nano-meter size, the interplay between spin and charge of electrons provides unique transport phenomena. In magnetic superlattices, magnetic and non-magnetic metallic thin films with thickness of the order of one nano-meter are piled-up alternately. Since the discovery of giant magnetoresistance (GMR) in these superlattices in 1988, spin dependent transport phenomena in magnetic nanostructures have received much attention from both academic and technological points of view. Ferromagnetic tunnel junctions made of ferromagnetic metal electrodes and a very thin insulating barrier between them are also of current interest as magnetoresistive devices, where the tunneling current depends on the relative orientation of magnetization (TMR). In addition to magnetic superlattices and magnetic tunnel junctions, magnetic granular systems and magnetic dots have been studied extensively as magnetoresistive systems. Edited by two of the world's leading authorities, Spin Dependent Transport in Magnetic Nanostructures introduces and explains the basic physics and applications of a variety of spin-dependent transport phenomena in magnetic nanostructures with particular emphasis on magnetic multilayers and magnetic tunnel junctions.
Book Synopsis Spin-dependent Transport Phenomena in Magnetic Nanostructures by : A. S. Sahakyan
Download or read book Spin-dependent Transport Phenomena in Magnetic Nanostructures written by A. S. Sahakyan and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transport Phenomena in Micro- and Nanoscale Functional Materials and Devices by : Joao B. Sousa
Download or read book Transport Phenomena in Micro- and Nanoscale Functional Materials and Devices written by Joao B. Sousa and published by Elsevier. This book was released on 2021-03-26 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport Phenomena in Micro- and Nanoscale Functional Materials and Devices offers a pragmatic view on transport phenomena for micro- and nanoscale materials and devices, both as a research tool and as a means to implant new functions in materials. Chapters emphasize transport properties (TP) as a research tool at the micro/nano level and give an experimental view on underlying techniques. The relevance of TP is highlighted through the interplay between a micro/nanocarrier's characteristics and media characteristics: long/short-range order and disorder excitations, couplings, and in energy conversions. Later sections contain case studies on the role of transport properties in functional nanomaterials. This includes transport in thin films and nanostructures, from nanogranular films, to graphene and 2D semiconductors and spintronics, and from read heads, MRAMs and sensors, to nano-oscillators and energy conversion, from figures of merit, micro-coolers and micro-heaters, to spincaloritronics. Presents a pragmatic description of electrical transport phenomena in micro- and nanoscale materials and devices from an experimental viewpoint Provides an in-depth overview of the experimental techniques available to measure transport phenomena in micro- and nanoscale materials Features case studies to illustrate how each technique works Highlights emerging areas of interest in micro- and nanomaterial transport phenomena, including spintronics
Book Synopsis Theoretical Studies of Spin Dependent Transport Phenomena by : Christoph Michel
Download or read book Theoretical Studies of Spin Dependent Transport Phenomena written by Christoph Michel and published by Cuvillier Verlag. This book was released on 2007 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanomagnetism and Spintronics by : Teruya Shinjo
Download or read book Nanomagnetism and Spintronics written by Teruya Shinjo and published by Elsevier. This book was released on 2013-10-07 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concise and accessible chapters of Nanomagnetism and Spintronics, Second Edition, cover the most recent research in areas of spin-current generation, spin-calorimetric effect, voltage effects on magnetic properties, spin-injection phenomena, giant magnetoresistance (GMR), and tunnel magnetoresistance (TMR). Spintronics is a cutting-edge area in the field of magnetism that studies the interplay of magnetism and transport phenomena, demonstrating how electrons not only have charge but also spin. This second edition provides the background to understand this novel physical phenomenon and focuses on the most recent developments and research relating to spintronics. This exciting new edition is an essential resource for graduate students, researchers, and professionals in industry who want to understand the concepts of spintronics, and keep up with recent research, all in one volume. Provides a concise, thorough evaluation of current research Surveys the important findings up to 2012 Examines the future of devices and the importance of spin current
Book Synopsis Spin-dependent Transport in Semiconductor-based Magnetic Nanostructures by : Athanasios N. Chantis
Download or read book Spin-dependent Transport in Semiconductor-based Magnetic Nanostructures written by Athanasios N. Chantis and published by . This book was released on 2002 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Spin Transport and Magnetism by : Evgeny Y. Tsymbal
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
Book Synopsis Spin-polarized Transport in Magnetic Nanostructures by : Brian Curtin O'Gorman
Download or read book Spin-polarized Transport in Magnetic Nanostructures written by Brian Curtin O'Gorman and published by . This book was released on 2009 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the principal phenomena observed and exploited in the field of spintronics are giant magnetoresistance (GMR) and spin transfer torque (STT). With GMR, the resistance of a magnetic multilayer is affected by the relative orientation of its magnetic layers due to (electron) spin dependent scattering. For the STT effect, a spin-polarized electric current is used to alter the magnetic state of a ferromagnet. Together, GMR and STT are at the foundation of numerous technologies, and they hold promise for many more applications. To achieve the high current densities (~1012 A/m2) that are necessary to observe STT effects, point contacts - constricted electrical pathways (~1-100 nm in diameter) between conducting materials - are often used because of their small cross-sectional areas. In this sense, we have explored STT in bilayer magnetic nanopillars, where an electric current was used to induce precession of a ferromagnetic layer. This precessional state was detected as an increase in resistance of the device, akin to GMR. Temperature dependent measurements of the onset of precession shed light on the activation mechanism, but raised further questions about its detailed theory. Point contacts can also be used as local sources or detectors of electrons. In this context, we have observed transverse electron focusing (TEF) in a single crystal of bismuth. TEF is a k-selective technique for studying electron scattering from within materials. Using lithographically fabricated point contacts, we have studied the temperature dependence of the relaxation time for ballistic electrons from 4.2 to 100 K. These measurements indicated a transition between electron-electron dominated scattering at low temperatures and electron-phonon scattering as the Debye temperature was approached. We present preliminary work toward a TEF experiment to measure spin dependent scattering from a non-magnet/magnet interface. We also investigated spin wave propagation in thin, magnetic waveguide structures. At the boundary between the waveguide and continuous magnetic film, spin wave rays were found to radiate into the film, or to reflect and form standing waves in the waveguide. A circular defect in the waveguide was observed to cause diffraction of spin waves, generating an interference pattern of higher modes of oscillation.
Book Synopsis Nanomagnetism and Spintronics by : Farzad Nasirpouri
Download or read book Nanomagnetism and Spintronics written by Farzad Nasirpouri and published by World Scientific. This book was released on 2011 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomagnetism and spintronics are two close subfields of nanoscience, explaining the effect of substantial magnetic properties of matter when the materials fabrication is realized at a comparable length size. Nanomagnetism deals with the magnetic phenomena specific to the structures having dimensions in the submicron range. The fact that the electronic transport properties of materials are dependent on the magnetic properties' artificial nanostructures, i.e., giant magnetoresistance (GMR) or tunneling magnetoresistance (TMR), has revolutionized spintronics science and technology. This book explains the concepts of nanomagnetism and spintronics by viewing the most recent research works from internationally distinguished research groups. Placing special emphasis on crucial fundamental and technical aspects of nanomagnetism and spintronics, it serves as a one-stop reference for universities offering postgraduate programs in nanotechnology or related disciplines. This unique book deals with all three stages required for conducting research in nanomagnetism and spintronics including fabrication, characterization and applications of nanomagnetic and spintronics materials, providing general concepts and an insightful overview of this subject for research students and scientists from different backgrounds investigating the multidisciplinary area of nanotechnology.
Book Synopsis Magnetic Nanostructures by : Hartmut Zabel
Download or read book Magnetic Nanostructures written by Hartmut Zabel and published by Springer. This book was released on 2012-09-15 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomagnetism and spintronics is a rapidly expanding and increasingly important field of research with many applications already on the market and many more to be expected in the near future. This field started in the mid-1980s with the discovery of the GMR effect, recently awarded with the Nobel prize to Albert Fert and Peter Grünberg. The present volume covers the most important and most timely aspects of magnetic heterostructures, including spin torque effects, spin injection, spin transport, spin fluctuations, proximity effects, and electrical control of spin valves. The chapters are written by internationally recognized experts in their respective fields and provide an overview of the latest status.
Book Synopsis Spin-dependent Transport Phenomena in Organic Semiconductors by : Jeremy D. Bergeson
Download or read book Spin-dependent Transport Phenomena in Organic Semiconductors written by Jeremy D. Bergeson and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Thin-film organic semiconductor transport can have an anomalously high sensitivity to low magnetic fields. Such a response is unexpected considering that at a modest magnetic field of 100 Oe the ratio of thermal energy to the energy associated with the intrinsic spin of charge carriers is 104 at room temperature and 102 at liquid helium temperatures. Nevertheless, we report experimental characterization of (1) spin-dependent injection, detection and transport through organic semiconductors and (2) the influence of a magnetic field on the spin dynamics of recombination-limited transport. The first focus of this work is accomplished by fabricating basic spin-valve devices consisting of two magnetic layers spatially separated by a nonmagnetic organic semiconductor. The spin-valve effect is a change in electrical resistance due to the magnetizations of the magnetic layers changing from parallel to antiparallel alignment, or vice versa. Metallic and semiconductor conductivities differ by many orders of magnitude inhibiting spin injection from the magnet into the nonmagnet, however, we achieve a 20% spin-valve effect at cryogenic temperatures by inserting ultra-thin tunnel barriers at the metal/semiconductor interfaces. In a unique device we replace one metallic magnet with the organic-based magnetic semiconductor vanadium tetracyanoethylene (V[TCNE]2) and attain a spin-valve effect at 10 K. The second focus of this work is the bulk magnetoresistance (MR) of thin-film small molecule, oligomer and polymer organic semiconductor structures. At room temperature the resistance can change significantly (up to 8% at 100 Oe, 15% at 1000 Oe.) Depending on parameters such as temperature, layer thickness, or voltage, the resistance of these materials may increase or decrease as a function of field. A model, termed magnetoresistance by the interconversion of singlets and triplets (MIST), is developed to account for this anomalous behavior. The MIST mechanism predicts that increasing the spin-orbit coupling in the organic semiconductor should decrease the magnitude of the MR. In an experiment where the small molecule Alq3 is doped with strong spin-orbit coupling molecules the MR decreases by an order of magnitude or more, depending on the doping. In addition, we show the experimental observation of high-field MR in devices with and without magnetic contacts.
Book Synopsis Magneto-transport Properties of Skyrmions and Chiral Spin Structures in MnSi by : Tomoyuki Yokouchi
Download or read book Magneto-transport Properties of Skyrmions and Chiral Spin Structures in MnSi written by Tomoyuki Yokouchi and published by . This book was released on 2019 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides extensive and novel insights into transport phenomena in MnSi, paving the way for applying the topology and chirality of spin textures to the development of spintronics devices. In particular, it describes in detail the key measurements, e.g. magnetoresistance and nonlinear electronic transport, and multiple material-fabrication techniques based on molecular beam epitaxy, ion-beam microfabrication and micromagnetic simulation. The book also reviews key aspects of B20-type MnSi chiral magnets, which host magnetic skyrmions, nanoscale objects formed by helical spatial spin structures. Readers are then introduced to cutting-edge findings on the material. Furthermore, by reviewing the author's successful experiments, the book provides readers with a valuable update on the latest achievements in the measurement and fabrication of magnetic materials in spintronics.
Book Synopsis Spin-dependent Transport in Graphene Nanostructures by : Jan Bundesmann
Download or read book Spin-dependent Transport in Graphene Nanostructures written by Jan Bundesmann and published by Universitatsverlag Regensburg. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene, a two-dimensional material consisting of carbon atoms arranged in a honeycomb lattice, has become famous for the evidence that its electronic structure approximately corresponds to the one of massless Dirac fermions. However, in order to correctly describe graphene , the spin, which plays an essential role in the physics of Dirac fermions, has to be replaced by the so-called pseudospin, an intrinsic property of the honeycomb lattice which is not related to the electrons' real spin. If, now, the real spin is considered, too, the effective Hamiltonian has to be extended by terms which have no equivalents in the original Dirac Hamiltonian. While charge transport properties can be predicted from Dirac physics very realiably, the extended Hamiltonian leads to new phenomena in the context of spin transport. In this thesis two distinct topics are investigated theoretically. The presented results are mainly based on numerical simulations using a recursive Green's function algorithm. The first part of this thesis covers spin relaxation in graphene. Different sources of spin relaxation are investigated with a particular focus on the role of locally varying spin-orbit coupling and adatoms. The second part covers edge magnetism in graphene zigzag nanoribbons. It is shown how magnetic clusters form even in the presence of a potential which is not homogeneous in space. Different signatures of zigzag edge magnetization on charge and spin transport are presented.
Book Synopsis Spintronics Handbook by : Evgeny Y. Tsymbal
Download or read book Spintronics Handbook written by Evgeny Y. Tsymbal and published by . This book was released on 2019 with total page 0 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.
Book Synopsis Spin-dependent Transport Phenomena in Single and Coupled Quantum Point Contacts by : Alexandros Shailos
Download or read book Spin-dependent Transport Phenomena in Single and Coupled Quantum Point Contacts written by Alexandros Shailos and published by . This book was released on 2004 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spin Dependent Thermoelectric Effects in Magnetic Nanostructures by : Santiago Serrano Guisán
Download or read book Spin Dependent Thermoelectric Effects in Magnetic Nanostructures written by Santiago Serrano Guisán and published by . This book was released on 2006 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic Nanostructures in Modern Technology by : Bruno Azzerboni
Download or read book Magnetic Nanostructures in Modern Technology written by Bruno Azzerboni and published by Springer. This book was released on 2007-10-14 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, a team of outstanding scientists in the field of modern magnetic nanotechnologies illustrates the state-of-the-art in several areas of advanced magneto-electronic devices, magnetic micro-electromechanical systems and high density information storage technologies. Providing a unique source of information for the young physicist, chemist or engineer, the book also serves as a crucial reference for the expert scientist and the teacher of advanced university courses.
