Quasi-localized impurity state in doped topological crystalline insulator Sn0.9In0.1Te probed by 125Te-NMR

Satoki Maeda, Shota Katsube, Guo Qing Zheng

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The In-doped topological crystalline insulator Sn1-xInx Te is a promising candidate for a topological superconductor, where it is theoretically suggested that In creates an impurity state responsible for superconductivity. We synthesized high purity Sn1-xInx Te samples and performed 125Te-nuclear magnetic resonance (NMR) measurements. The NMR spectra under a magnetic field of H0 = 5 T show a broadening characteristic due to a localized impurity state. The spin-lattice relaxation rate (1=T1) divided by temperature shows a Curie-Weiss like temperature-dependence under H0 = 0.1 T but is temperature-independent under H0 = 5 T. These results indicate the existence of quasi-localized impurity states due to In doping.

Original languageEnglish
Article number024702
Journaljournal of the physical society of japan
Volume86
Issue number2
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Quasi-localized impurity state in doped topological crystalline insulator Sn<sub>0.9</sub>In<sub>0.1</sub>Te probed by <sup>125</sup>Te-NMR'. Together they form a unique fingerprint.

Cite this