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Spin — Orbit-Influenced Spectroscopies of Magnetic Solids

2014-03-12 Science
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Release : 2014-03-12
Genre : Science
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Book Rating : 697/5 ( reviews)

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Book Synopsis Spin — Orbit-Influenced Spectroscopies of Magnetic Solids by : Hubert Ebert

Download or read book Spin — Orbit-Influenced Spectroscopies of Magnetic Solids written by Hubert Ebert. This book was released on 2014-03-12. Available in PDF, EPUB and Kindle. Book excerpt: Presented here for the first time are up-to-date reviews of a new and rapidly developing field of investigation: magnetic solids with polarized photons. The current experimental and theoretical fundamentals of the interplay of spin-orbit interaction and magnetism are described and recent advances in the understanding of the related spectroscopic phenomena are outlined. New aspects on a variety of methods are reported, covering magneto-optical Kerr-effect studies, spin- and angle-resolved photoemission spectroscopy, dichroism in X-ray near- and extended-edge absorption, and X-anomalous scattering. The potential of these methods to reveal new insights in the magnetic aspects of the electronic structure and the microscopic origin of magnetic properties is discussed.

Spin — Orbit-Influenced Spectroscopies of Magnetic Solids

1996-03-04 Science
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Release : 1996-03-04
Genre : Science
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Book Synopsis Spin — Orbit-Influenced Spectroscopies of Magnetic Solids by : Hubert Ebert

Download or read book Spin — Orbit-Influenced Spectroscopies of Magnetic Solids written by Hubert Ebert. This book was released on 1996-03-04. Available in PDF, EPUB and Kindle. Book excerpt: Presented here for the first time are up-to-date reviews of a new and rapidly developing field of investigation: magnetic solids with polarized photons. The current experimental and theoretical fundamentals of the interplay of spin-orbit interaction and magnetism are described and recent advances in the understanding of the related spectroscopic phenomena are outlined. New aspects on a variety of methods are reported, covering magneto-optical Kerr-effect studies, spin- and angle-resolved photoemission spectroscopy, dichroism in X-ray near- and extended-edge absorption, and X-anomalous scattering. The potential of these methods to reveal new insights in the magnetic aspects of the electronic structure and the microscopic origin of magnetic properties is discussed.

Core Level Spectroscopies for Magnetic Phenomena

2013-11-11 Science
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Release : 2013-11-11
Genre : Science
Kind : eBook
Book Rating : 717/5 ( reviews)

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Book Synopsis Core Level Spectroscopies for Magnetic Phenomena by : Paul S. Bagus

Download or read book Core Level Spectroscopies for Magnetic Phenomena written by Paul S. Bagus. This book was released on 2013-11-11. Available in PDF, EPUB and Kindle. Book excerpt: For several years, core level spectroscopies and other, c\osely related, electron spectroscopies have provided very useful information about the atomic composition, the geometric structure, and the electronic structure of condensed matter. Recently, these spectroscopies have also been used for the study of magnetic properties; such studies have a great potential to extend our knowledge and understanding of magnetic systems. This volume collects the lectures presented at the NATO Advanced Study Institute on "Core Level Spectroscopies for Magnetic Phenomena: Theory and Experiment" held at the Ettore Majorana Centre, Erice, Sicily, on 15 to 26 May 1994. The topics considered at the ASI covered a wide range of subjects involving the use of core-level and related spectroscopies to study magnetic phenomena. There are a large and growing number of applications of these spectroscopies to the study of magnetic materials; an important objective of the ASI was to stimulate further growth. The topics covered at the ASI can be placed into three general groups: 1) fundamental principles of core level spectroscopies; 2) basic aspects of magnetic phenomena; and, 3) the combination of the two previous topics embodied in applications of the spectroscopies to magnetism. In all three groups, theoretical interpretations as weH as experimental measurements were presented, often both of these aspects were covered in a single lecture or series oflectures. The theoretical treatments ofthe spectroscopies as weH as of the magnetic phenomena help to establish a framework for understanding many of the experimental measurements on magnetic materials.

Spin-orbit Coupling Influenced X-ray Spectroscopies and Resonant X-ray Magneto-optical Properties of Transition Metal Systems

2003 Science
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Release : 2003
Genre : Science
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Book Synopsis Spin-orbit Coupling Influenced X-ray Spectroscopies and Resonant X-ray Magneto-optical Properties of Transition Metal Systems by : Ján Minár

Download or read book Spin-orbit Coupling Influenced X-ray Spectroscopies and Resonant X-ray Magneto-optical Properties of Transition Metal Systems written by Ján Minár. This book was released on 2003. Available in PDF, EPUB and Kindle. Book excerpt: Among the many tools one has in hand in material science, the various electronic spectroscopies are of particular interest. Techniques based on synchrotron radiation, such as spin-resolved photoemission, X-ray magnetic circular and linear dichroism, resonant X-ray scattering and also X-ray magnetic microscopy have been shown to provide unique tools for the study of the magnetic phenomena and magnetic materials. However, it became apparent that all these new achievements need a strong theoretical support. Ab-initio theoretical investigations presented here adopted a one-electron picture, within the framework of Density functional theory, using the multiple scattering theory to solve the electronic structure problem. Most of the spectroscopies to be dealt with here can be seen as a direct consequence of the presence of a spontaneous magnetisation and relativistic effects, in particular the spin-orbit coupling. To deal with all relativistic effects and magnetism on the same level, the fully relativistic formalism will be used in the following. Thus, one of the goals of this work is to apply the Korringa-Kohn-Rostoker (KKR) band structure method in its relativistic version to a wide range of spectroscopies. Accordingly, all results will be compared with available experimental data as far as possible. Based on these results various aspects connected with experiments will be discussed in detail. In the first chapter the theoretical basis of this work will be introduced. The second part of this thesis is dedicated to the photoemission spectroscopies, i.e. spin-resolved Auger electron spectroscopy, Fano effects in valence band photoem ission and core level photoemission. In a third part we discuss resonant magneto-optical effects in the X-ray regime. Last chapter is dealing with non-collinear spin-structures within multiple scattering theory and its application to studies of photoemission and X-ray absorption is described.

Electron Spin Resonance of Paramagnetic Crystals

2012-12-06 Technology & Engineering
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Release : 2012-12-06
Genre : Technology & Engineering
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Book Rating : 909/5 ( reviews)

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Book Synopsis Electron Spin Resonance of Paramagnetic Crystals by : L. Sorin

Download or read book Electron Spin Resonance of Paramagnetic Crystals written by L. Sorin. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: The authors of this contribution to the literature of resonance spectroscopy in paramagnetic systems are primarily concerned with the properties of the rare earth ions and, as such, the formal derivation of crystal field theory is set out in a manner which reflects this dominant interest. The ions of the 3d transition group are perhaps given too cursory a treatment in Chapter Two for those students of RF spectroscopy who have a somewhat less rare-earth oriented interest in the subject. Since the exam ples cited in the text do include some 3d transition ions, it is perhaps worthwhile in a preface of this sort to extend the broad theoretical concepts and group characteriza tion of Chapter Two to cover, in a somewhat more detailed manner, the derivation of the spin-Hamiltonian for this case. In Chapter Two, mention is made of the fact that for the 4f rare earth ions the spin orbit coupling energy is in general large compared to the crystal field influence of the surrounding ligand matrix. In such a case, the quantum number J is a good quantum number for the rare earth ion in question and the crystal field effects are taken into account within 1M, states. In this formulation, which is pursued in detail in this book, the effects of spin-orbit coupling have been taken care of at the very outset by the d~"ining of the 1M, states.

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