TY - JOUR
T1 - Superconductivity in the Narrow Gap Semiconductor RbBi11/3Te6
AU - Malliakas, Christos D
AU - Chung, Duck Young
AU - Claus, Helmut
AU - Kanatzidis, Mercouri
N1 - Funding Information:
This work is supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/11/9
Y1 - 2016/11/9
N2 - 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. A sharp superconducting transition at ∼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 ∼10%. The RbBi11/3Te6 system is the first member of the new homologous series Rb[Bi2n+11/3Te3n+6] with infinite Bi2Te3-like layers. 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.
AB - 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. A sharp superconducting transition at ∼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 ∼10%. The RbBi11/3Te6 system is the first member of the new homologous series Rb[Bi2n+11/3Te3n+6] with infinite Bi2Te3-like layers. 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.
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U2 - 10.1021/jacs.6b08732
DO - 10.1021/jacs.6b08732
M3 - Article
C2 - 27744685
AN - SCOPUS:84994504398
VL - 138
SP - 14694
EP - 14698
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 44
ER -