Nanomagnetism and Spintronics

Novel magnetotransport phenomena appear when magnet sizes become nanoscale. Typical examples of such phenomena are giant magnetoresistance (GMR) in magnetic multilayers, tunnel magnetoresistance (TMR) in ferromagnetic tunnel junctions, and ballistic magnetoresistance (BMR) in magnetic nanocontacts. In this chapter, we first briefly review the relationship between spin-dependent resistivity and electronic structures in metals and alloys, and describe microscopic methods for investigating electrical transport. We then review the essential aspects of GMR, TMR, and BMR, emphasizing the role of the electronic structures of the constituent metals of these junctions and the effects of roughness on the electrical resistivity (or resistance). The important factors that control GMR are shown to be the spin-dependent random potential at interfaces and band matching/mismatching between magnetic and nonmagnetic layers. For TMR, several factors are shown to be important in determining the MR ratio, including the shape of the Fermi surface of the electrodes, the symmetry of the wave functions, electron scattering at interfaces, and spin-slip tunneling. An interpretation of TMR in Fe/MgO/Fe and of an oscillation of TMR is presented. TMR in granular films and in the Coulomb-blockade regime is also described. We also provide a brief explanation for other MR effects, such as normal MR, anisotropic MR (AMR) and colossal MR (CMR) in order to clarify the essential difference between these MRs and GMR, TMR, and BMR. These MR effects are attributed to the spin-dependent electrical currents produced in metallic ferromagnets. After the discovery of these different MR effects, the role of spin current was proposed, for example, spin Hall effect and the effects of spin transfer torque, which will be briefly explained in this chapter. The former orginates from the spin–orbit interaction, and can be observed even in nonmagnetic metals and semiconductors. It is closely related to the anomalous Hall effect observed in ferromagnetic metals. The spin transfer torque is an inverse effect of the MR. The MR is the resistivity change produced by magnetization rotation in ferromagnetic junctions, while the spin transfer torque is an effect in which spin-polarized current makes the magnetization rotate. Finally, we briefly introduce the coupled effects of spin, charge, and heat transport, which are called spin caloritronics.

Produk Detail:

  • Author : Jun-ichiro Inoue
  • Publisher : Elsevier Inc. Chapters
  • Pages : 372 pages
  • ISBN : 0128086769
  • Rating : 4/5 from 21 reviews
CLICK HERE TO GET THIS BOOKNanomagnetism and Spintronics

Nanomagnetism and Spintronics

Nanomagnetism and Spintronics
  • Author : Jun-ichiro Inoue
  • Publisher : Elsevier Inc. Chapters
  • Release : 07 October 2013
GET THIS BOOKNanomagnetism and Spintronics

Novel magnetotransport phenomena appear when magnet sizes become nanoscale. Typical examples of such phenomena are giant magnetoresistance (GMR) in magnetic multilayers, tunnel magnetoresistance (TMR) in ferromagnetic tunnel junctions, and ballistic magnetoresistance (BMR) in magnetic nanocontacts. In this chapter, we first briefly review the relationship between spin-dependent resistivity and electronic structures in metals and alloys, and describe microscopic methods for investigating electrical transport. We then review the essential aspects of GMR, TMR, and BMR, emphasizing the role of the electronic structures

Nanomagnetism and Spintronics

Nanomagnetism and Spintronics
  • Author : Teruya Shinjo
  • Publisher : Elsevier
  • Release : 29 June 2009
GET THIS BOOKNanomagnetism and Spintronics

Spintronics is a newly developing area in the field of magnetism, in which the interplay of magnetism and transport phenomena is studied experimentally and theoretically. This book introduces the recent progresses in the research relating to spintronics. * Presents in-depth analysis of this fascinating and technologically important new branch of nanoscience * Edited text with contributions from acknowledged leaders in the field * This handbook and guide will appeal to students and researchers in the fields of electronic devices and materials

Nanomagnetism and Spintronics

Nanomagnetism and Spintronics
  • Author : Farzad Nasirpouri,Alain Nogaret
  • Publisher : World Scientific
  • Release : 09 May 2021
GET THIS BOOKNanomagnetism and Spintronics

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

Nanomagnetism and Spintronics

Nanomagnetism and Spintronics
  • Author : Teruya Shinjo
  • Publisher : Elsevier
  • Release : 07 October 2013
GET THIS BOOKNanomagnetism and Spintronics

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

Nanomagnetic and Spintronic Devices for Energy-Efficient Memory and Computing

Nanomagnetic and Spintronic Devices for Energy-Efficient Memory and Computing
  • Author : Jayasimha Atulasimha,Supriyo Bandyopadhyay
  • Publisher : John Wiley & Sons
  • Release : 27 January 2016
GET THIS BOOKNanomagnetic and Spintronic Devices for Energy-Efficient Memory and Computing

Nanomagnetic and spintronic computing devices are strong contenders for future replacements of CMOS. This is an important and rapidly evolving area with the semiconductor industry investing significantly in the study of nanomagnetic phenomena and in developing strategies to pinpoint and regulate nanomagnetic reliably with a high degree of energy efficiency. This timely book explores the recent and on-going research into nanomagnetic-based technology. Key features: Detailed background material and comprehensive descriptions of the current state-of-the-art research on each topic. Focuses on

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials
  • Author : Sekhar Chandra Ray
  • Publisher : Elsevier
  • Release : 15 January 2020
GET THIS BOOKMagnetism and Spintronics in Carbon and Carbon Nanostructured Materials

Magnetism and Spintronics in Carbon and Carbon Nanostructured Materials offers coverage of electronic structure, magnetic properties and their spin injection, and the transport properties of DLC, graphene, graphene oxide, carbon nanotubes, fullerenes, and their different composite materials. This book is a valuable resource for those doing research or working with carbon and carbon-related nanostructured materials for electronic and magnetic devices. Carbon-based nanomaterials are promising for spintronic applications because their weak spin-orbit (SO) coupling and hyperfine interaction in carbon atoms entail

Spintronic 2D Materials

Spintronic 2D Materials
  • Author : Wenqing Liu,Yongbing Xu
  • Publisher : Elsevier
  • Release : 15 June 2019
GET THIS BOOKSpintronic 2D Materials

Spintronic 2D Materials: Fundamentals and Applications provides an overview of the fundamental theory of 2D electronic systems that includes a selection of the most intensively investigated 2D materials. The book tells the story of 2D spintronics in a systematic and comprehensive way, providing the growing community of spintronics researchers with a key reference. Part One addresses the fundamental theoretical aspects of 2D materials and spin transport, while Parts Two through Four explore 2D material systems, including graphene, topological insulators, and

Nanomagnetism

Nanomagnetism
  • Author : Claude Fermon,Marcel Van de Voorde
  • Publisher : John Wiley & Sons
  • Release : 17 March 2017
GET THIS BOOKNanomagnetism

This first book to focus on the applications of nanomagnetism presents those already realized while also suggesting bold ideas for further breakthroughs. The first part is devoted to the concept of spin electronics and its use for data storage and magnetic sensing, while the second part concentrates on magnetic nanoparticles and their use in industrial environment, biological and medical applications. The third, more prospective part goes on to describe emerging applications related to spin current creation and manipulation, dynamics, spin

Magnetic Nanostructures

Magnetic Nanostructures
  • Author : Hartmut Zabel,Michael Farle
  • Publisher : Springer
  • Release : 15 September 2012
GET THIS BOOKMagnetic Nanostructures

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

Principles of Nanomagnetism

Principles of Nanomagnetism
  • Author : Alberto P. Guimarães
  • Publisher : Springer
  • Release : 08 August 2017
GET THIS BOOKPrinciples of Nanomagnetism

The second edition of this book on nanomagnetism presents the basics and latest studies of low-dimensional magnetic nano-objects. It highlights the intriguing properties of nanomagnetic objects, such as thin films, nanoparticles, nanowires, nanotubes, nanodisks and nanorings as well as novel phenomena like spin currents. It also describes how nanomagnetism was an important factor in the rapid evolution of high-density magnetic recording and is developing into a decisive element of spintronics. Further, it presents a number of biomedical applications. With exercises

Introduction to Spintronics

Introduction to Spintronics
  • Author : Supriyo Bandyopadhyay,Marc Cahay
  • Publisher : CRC Press
  • Release : 20 March 2008
GET THIS BOOKIntroduction to Spintronics

Using spin to replace or augment the role of charge in signal processing devices, computing systems and circuits may improve speed, power consumption, and device density in some cases—making the study of spinone of the fastest-growing areas in micro- and nanoelectronics. With most of the literature on the subject still highly advanced and heavily theoretical, the demand for a practical introduction to the concepts relating to spin has only now been filled. Explains effects such as giant magnetoresistance, the

Ultrathin Magnetic Structures II

Ultrathin Magnetic Structures II
  • Author : B. Heinrich
  • Publisher : Springer Science & Business Media
  • Release : 09 May 1994
GET THIS BOOKUltrathin Magnetic Structures II

The ability to understand and control the unique properties of interfaces has created an entirely new field of magnetism which already has a profound impact in technology and is providing the basis for a revolution in electronics. The last decade has seen dramatic progress in the development of magnetic devices for information technology but also in the basic understanding of the physics of magnetic nanostructures. This volume describes thin film magnetic properties and methods for characterising thin film structure topics

Nanomagnetism

Nanomagnetism
  • Author : Anonim
  • Publisher : Elsevier
  • Release : 27 March 2006
GET THIS BOOKNanomagnetism

Nanoscience is of central importance in the physical and biological sciences and is now pervasive in technology. However nanomagnetism has a special role to play as magnetic properties depend uniquely on both dimensionality and lengthscales. Nanomagnetism is already central to data storage, sensor and device technologies but is increasingly being used in the life sciences and medicine. This volume aims to introduce scientists, computer scientists, engineers and technologists from diverse fields to this fascinating and technologically important new branch of

Magnetic Nano- and Microwires

Magnetic Nano- and Microwires
  • Author : Manuel Vázquez
  • Publisher : Woodhead Publishing
  • Release : 27 May 2015
GET THIS BOOKMagnetic Nano- and Microwires

Magnetic nanowires and microwires are key tools in the development of enhanced devices for information technology (memory and data processing) and sensing. Offering the combined characteristics of high density, high speed, and non-volatility, they facilitate reliable control of the motion of magnetic domain walls; a key requirement for the development of novel classes of logic and storage devices. Part One introduces the design and synthesis of magnetic nanowires and microwires, reviewing the growth and processing of nanowires and nanowire heterostructures

Simple Models of Magnetism

Simple Models of Magnetism
  • Author : Ralph Skomski
  • Publisher : Oxford University Press on Demand
  • Release : 17 January 2008
GET THIS BOOKSimple Models of Magnetism

Models of magnetism have been pivotal in the understanding and advancement of science and technology. The book is the first one to cover the field as a whole, complementing a rich literature on specific models of magnetism. It is written in an easily accessible style, with a limited amount of mathematics, and covers a wide range of phenomena.