Superconductivity on a Bi Square Net in LiBi | Zendy

Karolina Górnicka | Zendy; Sylwia Gutowska | Zendy; Michał J. Winiarski | Zendy; Bartłomiej Wiendlocha | Zendy; Weiwei Xie | Zendy; R. J. Cava | Zendy; Tomasz Klimczuk | Zendy

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Superconductivity on a Bi Square Net in LiBi

Author(s) -

Karolina Górnicka,

Sylwia Gutowska,

Michał J. Winiarski,

Bartłomiej Wiendlocha,

Weiwei Xie,

R. J. Cava,

Tomasz Klimczuk

Publication year - 2020

Publication title -

chemistry of materials

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 3.741

H-Index - 375

eISSN - 1520-5002

pISSN - 0897-4756

DOI - 10.1021/acs.chemmater.0c00179

Subject(s) - superconductivity , tetragonal crystal system , bismuth , square (algebra) , net (polyhedron) , critical field , condensed matter physics , crystal structure , materials science , magnetic susceptibility , crystallography , chemistry , physics , mathematics , geometry , metallurgy

We present the crystallographic analysis, superconducting characterization and theoretical modeling of LiBi, that contains the lightest and the heaviest nonradioactive metal. The compound crystallizes in a tetragonal (CuAu-type) crystal structure with Bi square nets separated by Li planes (parameters a = 3.3636(1) Å and c = 4.2459(2) Å, c/a = 1.26). Superconducting state was studied in detail by magnetic susceptibility and heat capacity measurements. The results reveal that LiBi is a moderately coupled type-I superconductor (λ e-p = 0.66) with T c = 2.48 K and a thermodynamic critical field H c (0) = 157 Oe. Theoretical studies show that bismuth square net is responsible for superconductivity in this compound, but the coupling between the Li planes and Bi planes makes a significant contribution to the superconductivity.

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