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  Effective mass of quasiparticles from thermodynamics

Eich, F. G., Holzmann, M., & Vignale, a. G. (2017). Effective mass of quasiparticles from thermodynamics. Physical Review B, 96(3): 035132. doi:10.1103/PhysRevB.96.035132.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-98F0-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-487F-0
Genre: Journal Article

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PhysRevB.96.035132.pdf (Publisher version), 372KB
 
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https://dx.doi.org/10.1103/PhysRevB.96.035132 (Publisher version)
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 Creators:
Eich, F. G.1, Author              
Holzmann, M.2, 3, Author
Vignale, and G.4, Author
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2LPMMC, UMR 5493 of CNRS, Universite Grenoble Alpe, ou_persistent22              
3Institut Laue Langevin, BP 156, ou_persistent22              
4Department of Physics and Astronomy, University of Missouri, Columbia, ou_persistent22              

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 Abstract: We discuss the potential advantages of calculating the effective mass of quasiparticles in the interacting electron liquid from the low-temperature free energy vis-a-vis the conventional approach, in which the effective mass is obtained from approximate calculations of the self-energy, or from a quantum Monte Carlo evaluation of the energy of a variational “quasiparticle wave function”. While raw quantum Monte Carlo data are presently too sparse to allow for an accurate determination of the effective mass, the values estimated by this method are numerically close to the ones obtained in previous calculations using diagrammatic many-body theory. In contrast to this, a recently published parametrization of quantum Monte Carlo data for the free energy of the homogeneous electron liquid yields effective masses that considerably deviate from previous calculations and even change sign for low densities, reflecting an unphysical negative entropy. We suggest that this anomaly is related to the treatment of the exchange energy at finite temperature.

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Language(s): eng - English
 Dates: 2017-06-262017-04-132017-07-182017-07-18
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.96.035132
arXiv: 1704.04076
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Project name : F.G.E. and G.V. acknowledge useful discussions with S. Trickey and V. Karasiev. F.G.E. has received funding from the European Union’s Framework Programme for Research and Innovation Horizon 2020 (2014–2020) under the Marie Skłodowska-Curie Grant Agreement No. 701796. G.V. acknowledges support from DOE Grant No. DE-FG02- 05ER46203.
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (3) Sequence Number: 035132 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008