148 citations · 181 across the 2 of their papers we have counts for
3 papers
Crystal structure instability of FeSe grains: Formation of non-superconducting phase at the grain surface
Hiroki Izawa, Yuji Tanaka, Yoshikazu Mizuguchi +1
We investigated the magnetization and crystal structure of FeSe polycrystalline samples with various grain sizes. For the samples with large grains, a large magnetic critical curre…
Pressure Study of BiS2-Based Superconductors Bi4O4S3 and La(O,F)BiS2
Hisashi Kotegawa, Yusuke Tomita, Hideki Tou +6
We report the electrical resistivity measurements under pressure for the recently discovered BiS2-based layered superconductors Bi4O4S3 and La(O,F)BiS2. In Bi4O4S3, the transition…
Bulk superconductivity in Bi4O4S3 revealed by specific heat measurement
Hiroshi Takatsu, Yoshikazu Mizuguchi, Hiroki Izawa +2
Specific heat experiments on a well-characterized polycrystalline sample of the BiS2 based superconductor Bi4O4S3 revealed that it shows a crear specific heat anomaly at about Tc =…