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Pis'ma v Zh. Èksper. Teoret. Fiz., 2013, Volume 98, Issue 1, Pages 28–32 (Mi jetpl3459)  

This article is cited in 5 scientific papers (total in 5 papers)

CONDENSED MATTER

Comparative study of electronic structure of new superconductors (Sr,Ca)Pd$_2$As$_2$ and related compound BaPd$_2$As$_2$

I. A. Nekrasova, M. V. Sadovskiiba

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

Abstract: This paper presents the comparative study of LDA calculated electronic structure of new isostructural to iron based systems superconductors (Sr,Ca)Pd$_2$As$_2$ with T$_c$ about $1$ K and similar but structurally different system BaPd$_2$As$_2$. Despite chemical formula looks similar to iron superconductors and even main structural motif is the same – layers of Fe square lattices, electronic structure of (Sr,Ca)Pd$_2$As$_2$ and BaPd$_2$As$_2$ differs from Fe(As,Se)-HTSC completely. All these systems have essentially three dimensional Fermi surfaces in contrast to Fe(As,Se) materials. The Fermi level is crossed by low intensive tails of Pd-$4d$ and As-$4p$ states. However (Sr,Ca)Pd$_2$As$_2$ and BaPd$_2$As$_2$ materials have rather well developed peaks of Pd-$4d$($x^2-y^2$) band. Thus by doping of about 2 holes per unit cell one can increase density of states at the Fermi level by a factor about 2.5. Since experimentally these compounds were found to be simple BCS superconductors the hole doping may considerably increase T$_c$. LDA calculated total densities of states at the Fermi level for stoichiometric systems perfectly agree with experimental estimates signifying rather small role of electronic correlations.

DOI: https://doi.org/10.7868/S0370274X13130067

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English version:
Journal of Experimental and Theoretical Physics Letters, 2013, 98:1, 24–27

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Received: 28.03.2013
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Citation: I. A. Nekrasov, M. V. Sadovskii, “Comparative study of electronic structure of new superconductors (Sr,Ca)Pd$_2$As$_2$ and related compound BaPd$_2$As$_2$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 98:1 (2013), 28–32; JETP Letters, 98:1 (2013), 24–27

Citation in format AMSBIB
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\by I.~A.~Nekrasov, M.~V.~Sadovskii
\paper Comparative study of electronic structure of new
superconductors (Sr,Ca)Pd$_2$As$_2$ and related compound BaPd$_2$As$_2$
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2013
\vol 98
\issue 1
\pages 28--32
\mathnet{http://mi.mathnet.ru/jetpl3459}
\crossref{https://doi.org/10.7868/S0370274X13130067}
\elib{http://elibrary.ru/item.asp?id=20687416}
\transl
\jour JETP Letters
\yr 2013
\vol 98
\issue 1
\pages 24--27
\crossref{https://doi.org/10.1134/S0021364013140129}
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\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-84884524036}


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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. I. A. Nekrasov, M. V. Sadovskii, JETP Letters, 99:10 (2014), 598–612  mathnet  crossref  crossref  isi  elib  elib
    2. Ganesanpotti S., Yajima T., Nakano K., Nozaki Ya., Yamamoto T., Tassel C., Kobayashi Y., Kageyama H., J. Alloy. Compd., 613 (2014), 370–374  crossref  isi  scopus
    3. Ding Q.-P., Wiecki P., Anand V.K., Sangeetha N.S., Lee Y., Johnston D.C., Furukawa Y., Phys. Rev. B, 93:14 (2016), 140502  crossref  isi  scopus
    4. K. Kudo, Y. Yamada, T. Takeuchi, T. Kimura, S. Ioka, G. Matsuo, Yu. Kitahama, M. Nohara, J. Phys. Soc. Jpn., 86:6 (2017), 063704  crossref  isi  scopus
    5. M. Abdel-Hafiez, Y. Zhao, Z. Huang, C.-w. Cho, C. H. Wong, A. Hassen, M. Ohkuma, Y.-W. Fang, B.-J. Pan, Z.-A. Ren, A. Sadakov, A. Usoltsev, V. Pudalov, M. Mito, R. Lortz, C. Krellner, W. Yang, Phys. Rev. B, 97:13 (2018), 134508  crossref  isi  scopus
  • Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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