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Superconductivity on a Bi Square Net in LiBi.

ABSTRACT: 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 (?e-p = 0.66) with T c = 2.48 K and a thermodynamic critical field Hc(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.

SUBMITTER: Gornicka K

PROVIDER: S-EPMC7588065 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Superconductivity on a Bi Square Net in LiBi.

Górnicka Karolina K Gutowska Sylwia S Winiarski Michał J MJ Wiendlocha Bartlomiej B Xie Weiwei W Cava R J RJ Klimczuk Tomasz T

Chemistry of materials : a publication of the American Chemical Society 20200316 7

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 ...[more]

PMID: 33122877

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