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Title: Superconductivity in the Narrow Gap Semiconductor RbBi 11/3Te 6

Superconductivity was discovered in the layered compound RbBi 11/3Te 6, featuring Bi vacancies and a narrow band gap of 0.25(2) eV at room temperature. In addition, a sharp superconducting transition at similar to 3.2 K was observed in polycrystalline ingots. The superconducting volume fraction of oriented single crystals is almost 100%, confirming bulk superconductivity. Systematic Se and Sb substitutions in RbBi 11/3-ySb ySe xTe 6-x, revealed a dependence of the superconducting transition on composition that can increase the T c up to similar to 10%. The RbBi 11/3Te 6 system is the first member of the new homologous series Rb[Bi 2n+11/3Te 3n+6] with infinite Bi 2Te 3-like layers. Lastly, the large degree of chemical tunability of the electronic structure of the homology via doping and/or substitution gives rise to a new family of superconductors.
Authors:
 [1] ;  [1] ;  [1] ;  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Department of Chemistry
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 138; Journal Issue: 44; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
OSTI Identifier:
1352590

Malliakas, Christos D., Chung, Duck Young, Claus, Helmut, and Kanatzidis, Mercouri G.. Superconductivity in the Narrow Gap Semiconductor RbBi11/3Te6. United States: N. p., Web. doi:10.1021/jacs.6b08732.
Malliakas, Christos D., Chung, Duck Young, Claus, Helmut, & Kanatzidis, Mercouri G.. Superconductivity in the Narrow Gap Semiconductor RbBi11/3Te6. United States. doi:10.1021/jacs.6b08732.
Malliakas, Christos D., Chung, Duck Young, Claus, Helmut, and Kanatzidis, Mercouri G.. 2016. "Superconductivity in the Narrow Gap Semiconductor RbBi11/3Te6". United States. doi:10.1021/jacs.6b08732. https://www.osti.gov/servlets/purl/1352590.
@article{osti_1352590,
title = {Superconductivity in the Narrow Gap Semiconductor RbBi11/3Te6},
author = {Malliakas, Christos D. and Chung, Duck Young and Claus, Helmut and Kanatzidis, Mercouri G.},
abstractNote = {Superconductivity was discovered in the layered compound RbBi11/3Te6, featuring Bi vacancies and a narrow band gap of 0.25(2) eV at room temperature. In addition, a sharp superconducting transition at similar to 3.2 K was observed in polycrystalline ingots. The superconducting volume fraction of oriented single crystals is almost 100%, confirming bulk superconductivity. Systematic Se and Sb substitutions in RbBi11/3-ySbySexTe6-x, revealed a dependence of the superconducting transition on composition that can increase the Tc up to similar to 10%. The RbBi11/3Te6 system is the first member of the new homologous series Rb[Bi2n+11/3Te3n+6] with infinite Bi2Te3-like layers. Lastly, the large degree of chemical tunability of the electronic structure of the homology via doping and/or substitution gives rise to a new family of superconductors.},
doi = {10.1021/jacs.6b08732},
journal = {Journal of the American Chemical Society},
number = 44,
volume = 138,
place = {United States},
year = {2016},
month = {10}
}