Spectral properties of LiFeAs: An LDA+DMFT study

Spectral properties of LiFeAs superconductor are investigated within the LDA+DMFT method. Calculated distribution of the spectral weight in the k -space is in good agreement with angle-resolved photoemission (ARPES) spectra. Calculated effective electron mass enhancement factor m */ m ≈ 3 is close t...

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Bibliographic Details
Published inJETP letters Vol. 96; no. 2; pp. 118 - 122
Main Authors Skornyakov, S. L., Novoselov, D. Y., Gürel, T., Anisimov, V. I.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 2012
Subjects
Atomic
Biological and Medical Physics
Biophysics
Condensed Matter
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
Spectral Weight
Spin Density Wave
JETP Letter
Quantum Monte Carlo
Local Density Approximation
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Summary:Spectral properties of LiFeAs superconductor are investigated within the LDA+DMFT method. Calculated distribution of the spectral weight in the k -space is in good agreement with angle-resolved photoemission (ARPES) spectra. Calculated effective electron mass enhancement factor m */ m ≈ 3 is close to the one estimated from comparison of density-functional theory results with ARPES spectra. Our results demonstrate that inclusion into consideration of dynamical Coulomb correlations between the electrons plays a key role in understanding of the spectral properties of LiFeAs.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364012140111