Pressure effect and electron diffraction on the anomalous transition in ternary superconductor Bi 2 Rh 3 Se 2

C. Y. Chen, C. L. Chan, S. Mukherjee, C. C. Chou, C. M. Tseng, S. L. Hsu, M. W. Chu, Jiunn-Yuan Lin, H. D. Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The effect of external hydrostatic pressure up to 22.23 kbar on the temperature-dependent transport properties of the ternary compound Bi 2 Rh 3 Se 2 is investigated. Interestingly, the resistive anomaly at T s ~250 K, previously proposed as a charge-density-wave (CDW) transition, is shifted to higher temperature with increasing pressure, in distinct contrast to an established knowledge for CDW. Using temperature-dependent electron-diffraction characterizations, we have unraveled that this transition is, in effect, of a structural phase-transformation nature, experiencing the symmetry reduction from a high-symmetry C-centered monoclinic lattice to a low-symmetry primitive one below T s . A more elaborately determined room-temperature C-centered lattice was also proposed.

Original languageEnglish
Pages (from-to)42-45
Number of pages4
JournalSolid State Communications
Volume177
DOIs
StatePublished - 1 Jan 2014

Keywords

  • A. Bi Rh Se ternary compound
  • D. Structural phase-transformation
  • E. Effects of pressure
  • E. Transmission electron microscopy

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