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Pis'ma v Zh. Èksper. Teoret. Fiz., 2016, Volume 103, Issue 5, Pages 378–384 (Mi jetpl4885)  

This article is cited in 3 scientific papers (total in 3 papers)

CONDENSED MATTER

Electron density of states of Fe-based superconductors: Quantum trajectory Monte Carlo method

V. A. Kashurnikov, A. V. Krasavin, Ya. V. Zhumagulov

National Research Nuclear University MEPhI, Kashirskoe sh. 31, Moscow, 115409, Russia

Abstract: The spectral and total electron densities of states in two-dimensional FeAs clusters, which simulate iron-based superconductors, have been calculated using the generalized quantum Monte Carlo algorithm within the full two-orbital model. Spectra have been reconstructed by solving the integral equation relating the Matsubara Green's function and spectral density by the method combining the gradient descent and Monte Carlo algorithms. The calculations have been performed for clusters with dimensions up to $10 \times 10$ FeAs cells. The profiles of the Fermi surface for the entire Brillouin zone have been presented in the quasiparticle approximation. Data for the total density of states near the Fermi level have been obtained. The effect of the interaction parameter, size of the cluster, and temperature on the spectrum of excitations has been studied.

Funding Agency Grant Number
Russian Science Foundation 14-22-00098


DOI: https://doi.org/10.7868/S0370274X1605009X

Full text: PDF file (1211 kB)
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English version:
Journal of Experimental and Theoretical Physics Letters, 2016, 103:5, 334–340

Bibliographic databases:

Document Type: Article
Received: 13.01.2016
Revised: 01.02.2016

Citation: V. A. Kashurnikov, A. V. Krasavin, Ya. V. Zhumagulov, “Electron density of states of Fe-based superconductors: Quantum trajectory Monte Carlo method”, Pis'ma v Zh. Èksper. Teoret. Fiz., 103:5 (2016), 378–384; JETP Letters, 103:5 (2016), 334–340

Citation in format AMSBIB
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\paper Electron density of states of Fe-based superconductors: Quantum trajectory Monte Carlo method
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    Citing articles on Google Scholar: Russian citations, English citations
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    This publication is cited in the following articles:
    1. Kashurnikov V.A., Krasavin A.V., Zhumagulov Ya.V., “Momentum Distribution of Occupation Numbers in Feas-Based Superconductors”, 5Th International Conference on Mathematical Modeling in Physical Sciences (Ic-Msquare 2016), Journal of Physics Conference Series, 738, eds. Vagenas E., Vlachos D., IOP Publishing Ltd, 2016, UNSP 012020  crossref  isi  scopus
    2. A. V. Krasavin, P. V. Borisyuk, O. S. Vasiliev, Ya. V. Zhumagulov, V. A. Kashurnikov, U. N. Kurelchuk, Yu. Yu. Lebedinskii, “Calculation of density of states of transition metals: from bulk sample to nanocluster”, Rev. Sci. Instrum., 89:3 (2018), 033907  crossref  isi  scopus
    3. Ya. V. Zhumagulov, V. A. Kashurnikov, A. V. Krasavin, A. E. Lukyanov, V. D. Neverov, “Phase diagram of the two-orbital model for iron-based HTSC: variational cluster approximation”, JETP Letters, 109:1 (2019), 45–50  mathnet  crossref  crossref  elib
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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