Effects of pressure-induced phase transitions on superconductivity in the single crystal Fe1.02Se

The temperature dependence of the ac susceptibility for single-crystalline Fe1.02Se has been measured at high pressures to 6.7 GPa. The superconducting transition temperature Tc displays a large increase from 7 K to 30 K in the two-phase region at 0.5 - 1 GPa. Further increase in pressure results in...

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Bibliographic Details
Published in:arXiv.org 2009-05
Main Authors: Tissen, V G, Ponyatovskii, E G, Nefedova, M V, Titov, A N, Fedorenko, V V
Format: Article
Language:English
Subjects:
Phase transitions
Pressure effects
Single crystals
Superconductivity
Temperature dependence
Transition temperature
Online Access:Get full text
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Summary:The temperature dependence of the ac susceptibility for single-crystalline Fe1.02Se has been measured at high pressures to 6.7 GPa. The superconducting transition temperature Tc displays a large increase from 7 K to 30 K in the two-phase region at 0.5 - 1 GPa. Further increase in pressure results in the decrease of Tc. The destruction of superconductivity near 7 GPa is presumably related to a structural transition from orthorhombic to hexagonal. .
ISSN:2331-8422
DOI:10.48550/arxiv.0905.3289