Understanding the heavy fermion phenomenology from a microscopic model

Ping Sun, B Kotliar

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We solve the 3D periodic Anderson model using a two impurity cluster dynamical mean field theory. We obtain the temperature versus hybridization phase diagram. Approaching the quantum critical point (QCP) both the Néel and lattice Kondo temperatures decrease and they do not cross at the lowest temperature we reached. While strong ferromagnetic spin fluctuation on the Kondo side is observed, our result suggests the critical static spin susceptibility is local in space at the QCP. We observe in the crossover region a logarithmic temperature dependence in the specific heat coefficient and spin susceptibility.

Original languageEnglish (US)
Article number016402
JournalPhysical Review Letters
Volume95
Issue number1
DOIs
StatePublished - Jul 1 2005

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phenomenology
fermions
critical point
magnetic permeability
crossovers
phase diagrams
specific heat
impurities
temperature dependence
temperature
coefficients

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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Understanding the heavy fermion phenomenology from a microscopic model. / Sun, Ping; Kotliar, B.

In: Physical Review Letters, Vol. 95, No. 1, 016402, 01.07.2005.

Research output: Contribution to journalArticle

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AU - Kotliar, B

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AB - We solve the 3D periodic Anderson model using a two impurity cluster dynamical mean field theory. We obtain the temperature versus hybridization phase diagram. Approaching the quantum critical point (QCP) both the Néel and lattice Kondo temperatures decrease and they do not cross at the lowest temperature we reached. While strong ferromagnetic spin fluctuation on the Kondo side is observed, our result suggests the critical static spin susceptibility is local in space at the QCP. We observe in the crossover region a logarithmic temperature dependence in the specific heat coefficient and spin susceptibility.

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