Nanomagnetism and Spintronics

Preface

List of Contributors

1. Overview

1.1 Introduction

1.2 Discovery of GMR

1.3 Development of GMR Studies

1.4 Recent Progress in MR Experiments

1.5 The Scope of This Book

References

2. GMR, TMR, BMR, and Related Phenomena

2.1 Introduction

2.2 Spin-Dependent Transport in Ferromagnetic Metals

2.3 Microscopic Theory of Electrical Conductivity: Linear Response Theory

2.4 Giant Magnetoresistance

2.5 Tunnel Magnetoresistance

2.6 Ballistic Magnetoresistance

2.7 Other MR Effects—Normal MR, AMR, and CMR

2.8 SOI and Hall Effects

2.9 Thermal Effects on Charge and Spin Currents

2.10 Spin Transfer and Spin Pumping

2.11 Perspective

Acknowledgments

References

3. Spin Injection and Voltage Effects in Magnetic Nanopillars and Its Applications

3.1 Spin Injection, Voltage Application, and Torque

3.2 Spin-Injection Magnetization Reversal

3.3 High-Frequency Phenomena

3.4 From Spin-Transfer Torque RAM to Magnetic Logic

Acknowledgments

References

4. Dynamics of Magnetic Domain Walls in Nanomagnetic Systems

4.1 Introduction

4.2 Field-Driven DW Motions

4.3 Current-Driven DW Motions

4.4 Topics on Nanodot Systems

Acknowledgments

References

5. Theoretical Aspects of Current-Driven Magnetization Dynamics

5.1 Introduction

5.2 Dynamics of a Rigid Domain Wall

5.3 Microscopic Calculation of Spin Torques

5.4 Related Topics

Acknowledgment

References

6. Micromagnetics of Domain Wall Dynamics in Soft Nanostrips

6.1 Introduction

6.2 Field Dynamics of Domain Walls

6.3 Domain Wall Motion by Spin-Polarized Current

6.4 Dynamics Under Combined Field and Current

6.5 Conclusions and Outlook

Acknowledgments

References

7. III–V-Based Ferromagnetic Semiconductors

7.1 Introduction

7.2 Molecular Beam Epitaxy

7.3 Structural and Magnetic Properties

7.4 Electrical and Optical Properties

7.5 The sp–d Exchange Interaction

7.6 The p–d Zener Model of Ferromagnetism

7.7 Properties Revealed by Device Structures

7.8 Prospects

Acknowledgment

References