Volume 85, Number 2, January 2009
|Number of page(s)||3|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||28 January 2009|
Pressure shift of the superconducting Tc of LiFeAs
TCSUH and Department of Physics, University of Houston - Houston, TX 77204, USA
2 TCSUH and Department of Chemistry, University of Houston - Houston, TX 77204, USA
3 Lawrence Berkeley National Laboratory - 1 Cyclotron Road, Berkeley, CA 94720, USA
4 Hong Kong University of Science and Technology - Hong Kong, China
Corresponding author: email@example.com
Accepted: 17 December 2008
The effect of hydrostatic pressure on the superconductivity in LiFeAs is investigated up to 1.8 GPa. The superconducting transition temperature, Tc, decreases linearly with pressure at a rate of 1.5 K/GPa. The negative pressure coefficient of Tc and the high ambient pressure Tc indicate that LiFeAs is the high-pressure analogue of the isoelectronic SrFe2As2 and BaFe2As2.
PACS: 74.25.Dw – Superconductivity phase diagrams / 74.62.Fj – Pressure effects / 74.70.Dd – Ternary, quaternary, and multinary compounds (including Chevrel phases, borocarbides, etc.)
© EPLA, 2009
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