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16 Result(s)
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Book
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Chapter
On the Lectures Whose Full Text Does Not Appear in this Book
An excellent introductory reference to the entire subject of surface states can be found in the article “Electron States at Clean Surfaces” by F. Forstmann, which appears in the book “Photoemission and the Ele...
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Chapter
First Principles Band Theory for Random Metallic Alloys
Two years ago at an Advanced Study Institute in Gent, we had given five lectures on the same topics as treated here. Since then the subject developed considerably and we have written an entirely new set of lec...
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Chapter
Aspects of the Numerical Solution of the KKR-CPA Equations
In this lecture, we review some of the difficulties encountered in the solution of the KKR-CPA equations and the numerical techniques developed to overcome them.
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Chapter
First Principles Theory of Alloy Phase Stability: Ordering and Pre-Martensitic Phenomena in β-Phase NiAl
We review, briefly, the first principles KKR-CPA theory of the electronic structure and energetics of alloys in which compositional disorder plays a role. We also review the first principles theories of orderi...
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Chapter
On the Causes of Compositional Order in NiPt Alloys
We review, briefly, the arguments which gave rise to the current controversy concerning the origin of compositional order in NicPt(1-c) alloys. We note that strain fluctuations play an important role in determini...
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Chapter
Statics and Dynamics of Alloy Phase Transformations Opening Remarks
Although a cliche it is nevertheless true that materials science is one of the pillars of Western Civilization and phase diagrams are one of its central preoccupations1. Most materials properties change smoothly,...
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Chapter
First Principles Theory of Disordered Alloys and Alloy Phase Stability
Almost immediately after the discovery of quantum mechanics, physicists and metallurgist began the task of trying to understand the origins of alloy phase stability in terms of the underlying electronic struct...
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Chapter
Anderson Theorem and Spatial Fluctuations in the Gap of Disordered Superconductors
We review the derivation of the Andersons theorem for a simple, negative-U Hubbard model of disordered superconductors and investigate the circumstances under which it governs the nature of superconducting state....
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Chapter
The Fermi Surfaces of Metallic Alloys and the Oscillatory Magnetic Coupling Between Magnetic Layers Separated by Such Alloy Spacers
We review the theory of oscillatory magnetic coupling in metallic multilayers across alloy spacers. We illustrate the relationship between the frequencies of the oscillations and the extremal caliper vectors o...
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Chapter
The Onsager Cavity Field in FCC Alloys
We discuss phase diagrams and concentration variations near surfaces of fcc alloys on the basis of replacing the Weiss field, in the Bragg-Williams approximation, by the Onsager Cavity field. We argue that thi...
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Chapter
Superconductivity in Disordered Sr2RuO4
We discus the influence of disorder on the critical temperature T c of a p-wave superconductor. To describe disordered Sr2RuO4 we use extended Hubbard m...
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Chapter
P-Wave Pairing in Superconducting Sr2RuO4
Although there is strong evidence that Sr2RuO4 is a triplet superconductor [2, 3], the full symmetry of the equilibrium state below Tc remains open to debate [2-14]. There exist strong indications for broken time...
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Article
Spin polarized current in the ground state of superconductor-ferromagnet-insulator trilayers
We study the ground state properties of a superconductor-ferromagnet-insulator trilayer on the basis of a Hubbard Model featuring exchange splitting in the ferromagnet and electron-electron attraction in the s...
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Article
Gap nodes and time reversal symmetry breaking in strontium ruthenate
We study the superconducting state of Sr2RuO4 on the bases of a phenomenological but orbital specific description of the electron-electron attraction and a realistic quantitative account of the electronic structu...
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Chapter and Conference Paper
Fulde-Ferrell-Larkin-Ovchinnikov-Like State in Ferromagnet-Superconductor Proximity System
We discuss some properties of the ferromagnet — superconductor proximity system. In particular, the emphasis is put on the physics of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) like state. In addition to Andreev...
