Open AccessBook
Spin Fluctuations in Itinerant Electron Magnetism
Tôru Moriya,Yoshinori Takahashi +1 more
TLDR
In this paper, a general theory of spin fluctuations and thermodynamical properties of itinerant electron magnets is developed, interpolating between the weakly and strongly ferromagnetic limits, and a unified expression is given for the Curie temperature and the physical meaning of the curie-Weiss magnetic susceptibility is discussed.Abstract:
A general theory of spin fluctuations and thermodynamical properties of itinerant electron magnets is developed, interpolating between the weakly and strongly ferromagnetic limits. A unified expression is given for the Curie temperature and the physical meaning of the Curie-Weiss magnetic susceptibility is discussed. As new phenomena derived from this theory the temperature-induced local magnetic moments as observed in CoS2, CoSe2, etc. and peculiar magnetic and thermal properties of nearly ferromagnetic semiconductors such as FeSi are discussed.read more
Citations
More filters
Journal ArticleDOI
Electronic structure calculations with dynamical mean-field theory
Gabriel Kotliar,Sergey Y. Savrasov,Kristjan Haule,V. S. Oudovenko,Olivier Parcollet,Chris A. Marianetti +5 more
TL;DR: In this article, a review of the basic ideas and techniques of spectral density functional theory which are currently used in electronic structure calculations of strongly correlated materials where the one-dimensional electron description breaks down is presented.
Journal ArticleDOI
Fermi-liquid instabilities at magnetic quantum phase transitions
TL;DR: In this article, the authors discuss the instabilities of the Fermi-liquid state of conduction electrons in metals with particular emphasis on magnetic quantum critical points, with the aim of assessing the validity of presently available theory.
Journal ArticleDOI
Magnetically mediated superconductivity in heavy fermion compounds
Neil D. Mathur,F. M. Grosche,Stephen Julian,I. R. Walker,D. M. Freye,R. K. W. Haselwimmer,G. G. Lonzarich +6 more
TL;DR: In this article, it was shown that the charge carriers are bound together in pairs by magnetic spin-spin interactions in heavy fermion superconductors CePd2Si2 and CeIn3.
Journal ArticleDOI
Coexistence of superconductivity and ferromagnetism in URhGe
Dai Aoki,Andrew Huxley,Eric Ressouche,Daniel Braithwaite,Jacques Flouquet,Jean-Pascal Brison,Elsa Lhotel,C. Paulsen +7 more
TL;DR: It is shown that the ferromagnet URhGe is superconducting at ambient pressure, and the thermodynamic signature of the transition is found—its form is consistent with asuperconducting pairing of a spin-triplet type, although further testing with cleaner samples is needed to confirm this.
Journal ArticleDOI
Half-metallic ferromagnets: From band structure to many-body effects
TL;DR: A review of new developments in theoretical and experimental electronic-structure investigations of half-metallic ferromagnets (HMFs) is presented in this article, where the effects of electron-magnon interaction in HMFs and their manifestations in magnetic, spectral, thermodynamic, and transport properties are considered.