Fermi-Surface Reconstruction in the Periodic Anderson Model

Details Fermi-Surface Reconstruction in the Periodic Anderson Model Fermi-Surface Reconstruction in the Periodic Anderson Model

2008-09-19

arxiv.org/abs/0809.3282v1

J. Phys. Soc. Jpn. 78 (2009) 024715

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 7 figures, submitted to Journal of the Physical Society of Japan

Scientific paper

10.1143/JPSJ.78.024715

We study ground state properties of periodic Anderson model in a two-dimensional square lattice with 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 which accompanies a change of topology of the Fermi surface. The former is induced by a simple back-folding of the Fermi surface while the latter is induced by localization of $f$ electrons. The mechanism of these transitions and the relation to the recent experiments on Fermi surface are discussed in detail.

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