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  Critical temperature and Ginzburg region near a quantum critical point in two-dimensional metals

Bauer, J., Jakubczyk, P., & Metzner, W. (2011). Critical temperature and Ginzburg region near a quantum critical point in two-dimensional metals. Physical Review B, 84(7): 075122.

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 Creators:
Bauer, J.1, Author           
Jakubczyk, P., Author
Metzner, W.1, Author           
Affiliations:
1Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370486              

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 Abstract: We compute the transition temperature T(c) and the Ginzburg temperature T(G) above T(c) near a quantum critical point at the boundary of an ordered phase with a broken discrete symmetry in a two-dimensional metallic electron system. Our calculation is based on a renormalization group analysis of the Hertz action with a scalar order parameter. We provide analytic expressions for T(c) and T(G) as a function of the nonthermal control parameter for the quantum phase transition, including logarithmic corrections. The Ginzburg regime between T(c) and T(G) occupies a sizable part of the phase diagram.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 581163
ISI: 000293618900009
 Degree: -

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Title: Physical Review B
  Alternative Title : Phys. Rev. B
Source Genre: Journal
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Publ. Info: COLLEGE PK : AMER PHYSICAL SOC
Pages: - Volume / Issue: 84 (7) Sequence Number: 075122 Start / End Page: - Identifier: ISSN: 1098-0121