American Chemical Society
ja407530u_si_001.pdf (402.15 kB)

Superconductivity in the Narrow-Gap Semiconductor CsBi4Te6

Download (402.15 kB)
journal contribution
posted on 2013-10-02, 00:00 authored by Christos D. Malliakas, Duck Young Chung, Helmut Claus, Mercouri G. Kanatzidis
Superconductivity was discovered in the narrow-gap semiconductor CsBi4Te6. A superconducting transition around 4.4 K was observed for p-type samples in temperature-dependent resistivity and magnetic susceptibility data. Stoichiometric CsBi4Te6 is not a superconductor. A remarkably high critical field of ∼10 T was estimated from the field-dependent resistivity data. The strongly anisotropic CsBi4Te6 system is monoclinic and the first member of a larger homologous series Cs4[Bi2n+4Te3n+6] that exhibits unconventional superconductivity, suggesting that proper doping of the homologous series may create a novel class of superconductors from semiconductors.