TY - JOUR
T1 - Superconductivity in Tl0.6Bi2Te3 Derived from a Topological Insulator
AU - Wang, Zhiwei
AU - Taskin, A. A.
AU - Frölich, Tobias
AU - Braden, Markus
AU - Ando, Yoichi
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/2/9
Y1 - 2016/2/9
N2 - Bulk superconductivity has been discovered in Tl0.6Bi2Te3, which is derived from the topological insulator Bi2Te3. A superconducting volume fraction of up to 95% (determined from the specific heat) with a Tc of 2.28 K was observed. The carriers are p-type with a density of ∼1.8 × 1020 cm-3. Resistive transitions under magnetic fields point to an unconventional temperature dependence of the upper critical field Bc2. The crystal structure appears to be unchanged from that of Bi2Te3, with a shorter c lattice parameter, which, together with the Rietveld analysis, suggests that Tl ions are incorporated but not intercalated. This material is an interesting candidate for a topological superconductor that may be realized by the strong spin-orbit coupling inherent to topological insulators.
AB - Bulk superconductivity has been discovered in Tl0.6Bi2Te3, which is derived from the topological insulator Bi2Te3. A superconducting volume fraction of up to 95% (determined from the specific heat) with a Tc of 2.28 K was observed. The carriers are p-type with a density of ∼1.8 × 1020 cm-3. Resistive transitions under magnetic fields point to an unconventional temperature dependence of the upper critical field Bc2. The crystal structure appears to be unchanged from that of Bi2Te3, with a shorter c lattice parameter, which, together with the Rietveld analysis, suggests that Tl ions are incorporated but not intercalated. This material is an interesting candidate for a topological superconductor that may be realized by the strong spin-orbit coupling inherent to topological insulators.
UR - http://www.scopus.com/inward/record.url?scp=84957944347&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b03727
DO - 10.1021/acs.chemmater.5b03727
M3 - Article
AN - SCOPUS:84957944347
SN - 0897-4756
VL - 28
SP - 779
EP - 784
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 3
ER -