FeTe as a candidate material for new iron-based superconductor

• Published in: Physica. C, Superconductivity Vol. 469; no. 15; pp. 1027 - 1029
• Main Authors: Mizuguchi, Y., Tomioka, F., Tsuda, S., Yamaguchi, T., Takano, Y.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2009; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; FeSe; FeTe; Iron-based superconductor; Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.); Physics; Pressure effect; Pressure effects; Superconducting materials (excluding high-tc compounds); Superconductivity; Transition temperature variations; FeSe; 74.25.Fy; FeTe; Pressure effect; 74.10.+v; 74.62.Fj; Iron-based superconductor; Electrical conductivity; Pressure effects; Tetragonal lattices; Superconducting transitions; Superconductors; Iron tellurides; Anomaly
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2009.05.177

Tetragonal FeSe is a superconductor with a transition temperature T c of 8 K and shows a huge enhancement of T c with applying pressure. Tetragonal FeTe has a structure very analogous to superconducting FeSe, but does not show superconducting transition. We investigated the pressure effect of resistivity on FeTe. The resistivity at room temperature decreased with increasing pressure. An anomaly in resistivity around 80 K shifted towards a lower temperature with increasing pressure.