Gutzwiller wave function under magnetic field

Hisatoshi Yokoyama; Shinya Tokizaki

doi:10.1016/S0921-4526(96)00598-4

Gutzwiller wave function under magnetic field

Hisatoshi Yokoyama, Shinya Tokizaki

SCI - Physics

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

Magnetization process of the Gutzwiller wave function is studied accurately by a variational Monte-Carlo method. We apply it to the one-dimensional (ID) and 2D Hubbard models (HM), and to the 1D periodic Anderson model (PAM) without orbital degeneracy. For the HM, magnetization varies discontinuously to the full moment, as the magnetic field increases. For the PAM, the paramagnetic state is unstable against ferromagnetism, although the energy reduction thereof is small.

Original language	English
Pages (from-to)	418-420
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	230-232
DOIs	https://doi.org/10.1016/S0921-4526(96)00598-4
Publication status	Published - 1997 Feb

Keywords

Gutzwiller method
Hubbard model

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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abstract = "Magnetization process of the Gutzwiller wave function is studied accurately by a variational Monte-Carlo method. We apply it to the one-dimensional (ID) and 2D Hubbard models (HM), and to the 1D periodic Anderson model (PAM) without orbital degeneracy. For the HM, magnetization varies discontinuously to the full moment, as the magnetic field increases. For the PAM, the paramagnetic state is unstable against ferromagnetism, although the energy reduction thereof is small.",

keywords = "Gutzwiller method, Hubbard model",

author = "Hisatoshi Yokoyama and Shinya Tokizaki",

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AU - Yokoyama, Hisatoshi

AU - Tokizaki, Shinya

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N2 - Magnetization process of the Gutzwiller wave function is studied accurately by a variational Monte-Carlo method. We apply it to the one-dimensional (ID) and 2D Hubbard models (HM), and to the 1D periodic Anderson model (PAM) without orbital degeneracy. For the HM, magnetization varies discontinuously to the full moment, as the magnetic field increases. For the PAM, the paramagnetic state is unstable against ferromagnetism, although the energy reduction thereof is small.

AB - Magnetization process of the Gutzwiller wave function is studied accurately by a variational Monte-Carlo method. We apply it to the one-dimensional (ID) and 2D Hubbard models (HM), and to the 1D periodic Anderson model (PAM) without orbital degeneracy. For the HM, magnetization varies discontinuously to the full moment, as the magnetic field increases. For the PAM, the paramagnetic state is unstable against ferromagnetism, although the energy reduction thereof is small.

KW - Gutzwiller method

KW - Hubbard model

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