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

Christos D. Malliakas, Duck Young Chung, Helmut Claus, Mercouri G. Kanatzidis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)7118-7122
Number of pages5
JournalChemistry - A European Journal
Issue number28
StatePublished - May 17 2018


  • bismuth-based superconductors
  • homologous series
  • superconductivity
  • two-dimensional layered compounds

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry


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