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Magnetic Anisotropies in Nanostructured Matter (Condensed Matter Physics)

Magnetic Anisotropies in Nanostructured Matter (Condensed Matter Physics)

By: Peter Weinberger (author)Hardback

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One of the Top Selling Physics Books according to YBP Library Services Magnetic Anisotropies in Nanostructured Matter presents a compact summary of all the theoretical means to describe magnetic anisotropies and interlayer exchange coupling in nanosystems. The applications include free and capped magnetic surfaces, magnetic atoms on metallic substrates, nanowires, nanocontacts, and domain walls. Some applications also deal with temperature-dependent effects and ab initio magnetization dynamics. The author clarifies parallel and antiparallel, the distinction between classical spin vectors and spinors, and the actual form of spin-orbit interactions, before showing how symmetry can provide the formal tools to properly define magnetic structures. After these introductory chapters, the book presents methods to describe anisotropic physical properties of magnetic nanostructures. It then focuses on magnetic anisotropy energies, exchange and Dzyaloshinskii-Moriya interactions, temperature-dependent effects, spin dynamics, and related properties of systems nanostructured in one and two dimensions. The book also discusses how methods of describing electric and magneto-optical properties are applied to magnetic nanostructured matter. It concludes with an outlook on emerging magnetic anisotrophic effects. Written by a leading researcher with over 35 years of experience in the field, this book examines the theory and modeling of magnetic anisotropies in nanostructured materials. It shows how these materials are used in a range of applications.

About Author

University of Vienna, Austria


Introduction Preliminary Considerations Parallel, antiparallel, collinear, and noncollinear Characteristic volumina "Classical" spin vectors and spinors The famous spin-orbit interaction Symmetry Considerations Translational invariance Rotational invariance Colloquial or parent lattices Tensorial products of spin and configuration Cell-dependent potentials and exchange fields Magnetic configurations Green's Functions and Multiple Scattering Resolvents and Green's functions The Dyson equation Scaling transformations Integrated density of states Superposition of individual potentials The scattering path operator Angular momentum and partial wave representations Single particle Green's function Symmetry aspects Charge and magnetization densities Changing the orientation of the magnetization Screening transformations The embedded cluster method The Coherent Potential Approximation Configurational averages Restricted ensemble averages The coherent potential approximation The single-site coherent potential approximation Complex lattices and layered systems Remark with respect to systems nanostructured in two dimensions Calculating Magnetic Anisotropy Energies Total energies The magnetic force theorem Magnetic dipole-dipole interactions Exchange and Dzyaloshinskii-Moriya Interactions The free energy and its angular derivatives An intermezzo: classical spin Hamiltonians Relations to relativistic multiple scattering theory The Disordered Local Moment Method (DLM) The relativistic DLM method for layered systems Approximate DLM approaches Spin Dynamics The phenomenological Landau-Lifshitz-Gilbert equation The semiclassical Landau-Lifshitz equation Constrained density functional theory The semiclassical Landau-Lifshitz-Gilbert equation First principles spin dynamics for magnetic systems nanostructured in two dimensions The Multiple Scattering Scheme The quantum mechanical approach Methodological aspects in relation to magnetic anisotropies Physical properties related to magnetic anisotropies Nanostructured in One Dimension: Free and Capped Magnetic Surfaces Reorientation transitions Trilayers, interlayer exchange coupling Temperature dependence A short summary Nanostructured in One Dimension: Spin Valves Interdiffusion at the interfaces Spin valves and noncollinearity Switching energies and the phenomenological Landau-Lifshitz-Gilbert equation Heterojunctions Summary Nanostructured in Two Dimensions: Single Atoms, Finite Clusters, and Wires Finite clusters Finite wires and chains of magnetic atoms Aspects of noncollinearity Nanostructured in Two Dimensions: Nanocontacts, Local Alloys Quantum corrals Magnetic adatoms and surface states Nanocontacts Local alloys Summary A Mesoscopic Excursion: Domain Walls Theory of Electric and Magneto-Optical Properties Linear response theory Kubo equation for independent particles Electric transport-the static limit The Kubo-Greenwood equation Optical transport Electric Properties of Magnetic Nanostructured Matter The bulk anisotropic magnetoresistance (AMR) Current-in-plane (CIP) and the giant magnetoresistance (GMR) Current-perpendicular to the planes of atoms (CPP) Tunneling conditions Spin-valves Heterojunctions Systems nanostructured in two dimensions Domain wall resistivities Summary Magneto-Optical Properties of Magnetic Nanostructured Matter The macroscopic model The importance of the substrate The Kerr effect and interlayer exchange coupling The Kerr effect and magnetic anisotropy energy The Kerr effect in the case of repeated multilayers How surface sensitive is the Kerr effect? Summary Time Dependence Terra incognita Pump-probe experiments Pulsed electric fields Spin currents and torques Instantaneous resolvents and Green's functions Time-dependent multiple scattering Physical effects to be encountered Expectations Afterword Index

Product Details

  • ISBN13: 9781420072655
  • Format: Hardback
  • Number Of Pages: 310
  • ID: 9781420072655
  • weight: 589
  • ISBN10: 142007265X

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