Dutta, P. ; Bhoi, D. ; Midya, A. ; Khan, N. ; Mandal, P. ; Shanmukharao Samatham, S. ; Ganesan, V. (2012) Anomalous thermal expansion of Sb2Te3 topological insulator Applied Physics Letters, 100 (25). p. 251912. ISSN 0003-6951
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Official URL: http://doi.org/10.1063/1.4730390
Related URL: http://dx.doi.org/10.1063/1.4730390
Abstract
We have investigated the temperature dependence of the linear thermal expansion along the hexagonal c axis (ΔL), in-plane resistivity (ρ), and specific heat (Cp) of the topological insulator Sb2Te3 single crystal. ΔL exhibits a clear anomaly in the temperature region 204–236 K. The coefficient of linear thermal expansion α decreases rapidly above 204 K, passes through a deep minimum at around 225 K, and then increases abruptly in the region 225–236 K. α is negative in the interval 221–228 K. The temperature dependence of both α and Cp can be described well by the Debye model from 2 to 290 K, excluding the region around the anomaly in α.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 122833 |
| Deposited On: | 17 Aug 2021 07:04 |
| Last Modified: | 17 Aug 2021 07:04 |
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