Titlebook: Spin Fluctuations in Itinerant Electron Magnetism; Tôru Moriya Textbook 1985 Springer-Verlag Berlin Heidelberg 1985 Electron Magnetism.Spi

不合

潜移默化

Colonnade

Introduction, the advent of quantum mechanics, has enabled remarkable progress in our understanding of magnetism. The research efforts still continue at present, for example, in the area of metals with narrow . and/or . bands where the essential importance of the electron-electron correlation poses challenging p

GRACE

Mean-Field Theory of Itinerant Electron Magnetism,y, which originates from . work on nickel [2.1]. A single-band version of this model is called the Hubbard model. This chapter first presents these model Hamiltonians and then proceeds to the Slater-Stoner theory of ferromagnetism and the Slater-Overhauser theory of antiferromagnetism and spin densi

背书

Dynamical Mean-Field Theory of Spin Fluctuations, an electron and a hole thus produced are assumed to move independently in a common static mean field. The resulting spin density fluctuation has generally a small amplitude and the thermal excitation is underestimated. To be more realistic we have to take into account the scattering of electron-hol

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Self-Consistent Renormalization (SCR) Theory of Spin Fluctuations,ergy of the thermal equilibrium state. Such a renormalization effect is conveniently treated by starting with a formally exact expression for the free energy of an interacting electron system, given in terms of the dynamical susceptibilities through the coupling constant integral (Sect. 4.1).

玉米棒子

Stable-Angina

加花粗鄙人

entice