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Title: Superconductivity in the 2-Dimensional Homologous Series AMmBi3Q5+m (m =1, 2) (A=Rb, Cs; M=Pb, Sn; Q=Se, Te)

Journal Article · · Chemistry - A European Journal
 [1]; ORCiD logo [2];  [2];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division

Here, superconductivity in the two-dimensional AMmBi3Q5+m family of semimetals is reported. The AMBi3Te6 (m=1) and AM2Bi3Te7 (m=2) members of the homologous series with A=Rb, Cs and M=Pb, Sn undergo a bulk superconducting transition ranging from 2.7 to 1.4 K depending on the composition. The estimated superconducting volume fraction is about 90 %. Superconducting phase diagrams as a function of chemical pressure are constructed for the solid solution products of each member of the homologous series, AMBi3-xSbxTe6-ySey and AM2Bi3-xSbxTe7-ySey (0≤x≤3 or 0≤y≤2). The structural flexibility of the ternary AMmM'3Te5+m semiconducting homology to form isostructural analogues with a variety of metals, M=Pb, Sn; M'=Bi, Sb, gives access to a large number of electronic configurations and superconductivity due to chemical pressure effects.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1462751
Alternate ID(s):
OSTI ID: 1434538
Journal Information:
Chemistry - A European Journal, Vol. 24, Issue 28; ISSN 0947-6539
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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Figures / Tables (5)