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Pis'ma v Zh. Èksper. Teoret. Fiz.:

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Pis'ma v Zh. Èksper. Teoret. Fiz., 2012, Volume 95, Issue 1, Pages 37–41 (Mi jetpl2415)  

This article is cited in 21 scientific papers (total in 21 papers)


Electronic and magnetic structure of presumable superconductor BaFe$_2$Se$_3$

M. V. Medvedeva, I. A. Nekrasova, M. V. Sadovskiiab

a Institute of Electrophysics, Urals Branch, Russian Academy of Sciences, Ekaterinburg
b Institute of Metal Physics, Ural Division of the Russian Academy of Sciences

Abstract: We present results of LDA-calculations (band structure, densities of states, Fermi surfaces) for possible iron based superconductor BaFe$_2$Se$_3$ (Ba123) in normal (paramagnetic) phase. Results are briefly compared with similar data on prototype BaFe$_2$As$_2$ and (K,Cs)Fe$_2$Se$_2$ superconductors. Without doping this system is antiferromagnetic with $T_N^{\exp}\sim250 $K and rather complicated magnetic structure. Neutron diffraction experiments indicated the possibility of two possible spin structures (antiferromagnetically ordered “plaquettes” or “zigzags”), indistinguishable by neutron scattering. Using LSDA calculated exchange parameters we estimate Neel temperatures for both spin structures within the molecular field approximation and show $\tau_1$ (“plaquettes”) spin configuration to be more favorable than $\tau_2$ (“zigzags”).

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English version:
Journal of Experimental and Theoretical Physics Letters, 2012, 95:1, 33–37

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Received: 01.12.2011

Citation: M. V. Medvedev, I. A. Nekrasov, M. V. Sadovskii, “Electronic and magnetic structure of presumable superconductor BaFe$_2$Se$_3$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 95:1 (2012), 37–41; JETP Letters, 95:1 (2012), 33–37

Citation in format AMSBIB
\by M.~V.~Medvedev, I.~A.~Nekrasov, M.~V.~Sadovskii
\paper Electronic and magnetic structure of presumable superconductor BaFe$_2$Se$_3$
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2012
\vol 95
\issue 1
\pages 37--41
\jour JETP Letters
\yr 2012
\vol 95
\issue 1
\pages 33--37

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