AC magnetic measurement of LiFeAs at pressures up to 5.2 GPa: The relation between T (c) and the structural parameters

作者：Yamaguchi Shuhei^*; Yamaguchi Nobuhiro; Mito Masaki; Deguchi Hiroyuki; Baker Peter J; Blundell Stephen J; Pitcher Michael J; Parker Dinah R; Clarke Simon J

来源：Journal of the Korean Physical Society, 2013, 63(3): 445-447.

DOI：10.3938/jkps.63.445

The pressure effects on the 111-type Fe-based superconductor LiFeAs were investigated through AC susceptibility measurements and X-ray diffraction experiments, and revealed a correlation between the superconducting transition temperature (T (c) ) and the As-Fe-As bond angle (alpha) rather than the height of As from the Fe layers (h (As)). As the pressure was increased, T (c) of 17 K at P = 0 GPa decreased down to 10 K at P = 5.2 GPa. According to a previous report from an X-ray diffraction experiment, alpha changes from 101.5A degrees at 0 GPa to 97.8A degrees at 17 GPa.

• 出版日期2013-8