Fermi-Surface Reconstruction in the Periodic Anderson Model(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

元データ 2009-02-15

概要

We study the ground state properties of a periodic Anderson model in a two-dimensional square lattice with a variational Monte Carlo method. It is shown that there are two different types of quantum phase transition: a conventional antiferromagnetic transition and a Fermi-surface reconstruction that accompanies a change in the topology of the Fermi surface. The former is induced by the simple back-folding of the Fermi surface, while the latter is induced by the localization of f electrons. The mechanism of these transitions and its relationship with the results of recent experiments on the Fermi surface are discussed in detail.

著者

OGATA Masao Department of Physics, University of Tokyo
Watanabe Hiroshi Department of Cardiology, Niigata City General Hospital
Ogata Masao Department Of Physics University Of Tokyo
Ogata Masao Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo
Watanabe Hiroshi Department Of Applied Chemistry And Bioengineering Graduate School Of Engineering Osaka City Univers
Ogata Masao Department Of Basic Science Graduate School Of Arts And Science University Of Tokyo

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