Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point.

Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point. Research Abstract Details 

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Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point. Abstract Text:

Hiroshi Watanabe,Masao Ogata,Hiroshi Watanabe,Masao Ogata,

Motivated by recent Hall-effect experiment in YbRh(2)Si(2), we study ground state properties of a Kondo lattice model in a two-dimensional square lattice using variational Monte Carlo method. We show that there are two types of phase transition, an antiferromagnetic transition and a topological one (Fermi-surface reconstruction). In a wide region of parameters, these two transitions occur simultaneously without the breakdown of Kondo screening, accompanied by a discontinuous change of the Hall coefficient. This result is consistent with the experiment and gives a novel theoretical picture for the quantum critical point in heavy-fermion systems.

Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point. Publishing Authors By Initials

H Watanabe,M Ogata,H Watanabe,M Ogata,

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Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Physical review letters

VOLUME: 99

Page Numbers: 136401

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 25

MONTH: 09

YEAR: 2007

Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Fermi-surface reconstruction without breakdown of Kondo screening at the quantum critical point.

AFFILIATION: Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. hwatanabe@hosi.phys.s.u-tokyo.ac.jp

Country: United States

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MEDLINETA: Phys Rev Lett

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