TY - JOUR
T1 - Superconductivity induced by surface polishing in CeIrSi3
AU - Iida, Hiroki
AU - Sato, Masashi
AU - Kimura, Noriaki
N1 - Funding Information:
One of the authors (N.K.) would like to thank Professor Y. Aoki for pointing out the possibility of pressure distribution in the beginning. We also thank M. Kikuchi, H. Moriyama, and N. Fukiage for their technical support. This work was supported by JSPS KAKENHI Grant Numbers 13J03479, 26400345, 22340088, and 20102002.
Publisher Copyright:
©2016 The Physical Society of Japan.
PY - 2016/7/15
Y1 - 2016/7/15
N2 - We show that superconductivity observed in the antiferromagnetic state of CeIrSi3, a pressure-induced heavy fermion superconductor, is mainly due to a surface layer induced by mechanical polishing. The superconducting reduction of the electrical resistivity in the antiferromagnetic state strongly depends on the strength of the applied electrical current and dissipates after a heat treatment. These results indicate that mechanical polishing causes an inhomogeneous distortion on the surface of the sample and locally produces a high-pressure region in which the bulk superconductivity arises.
AB - We show that superconductivity observed in the antiferromagnetic state of CeIrSi3, a pressure-induced heavy fermion superconductor, is mainly due to a surface layer induced by mechanical polishing. The superconducting reduction of the electrical resistivity in the antiferromagnetic state strongly depends on the strength of the applied electrical current and dissipates after a heat treatment. These results indicate that mechanical polishing causes an inhomogeneous distortion on the surface of the sample and locally produces a high-pressure region in which the bulk superconductivity arises.
UR - http://www.scopus.com/inward/record.url?scp=84978120390&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84978120390&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.85.073708
DO - 10.7566/JPSJ.85.073708
M3 - Article
AN - SCOPUS:84978120390
SN - 0031-9015
VL - 85
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 7
M1 - 073708
ER -