特集：強相関電子系物質における高圧力で誘起される新奇な超伝導
CePtSi2の圧力誘起超伝導
2019 年 29 巻 4 号 p. 283-289
詳細
2019 年 29 巻 4 号 p. 283-289
In this article, I introduce the pressure-induced superconductivity in CePtSi2 with its discovering process. At ambient pressure, the orthorhombic CePtSi2 shows an antiferromagnetic order below TN=1.8 K. TN disappears above 1.2 GPa, and a superconducting phase appears with Tc～0.1 K. Significant decrease of the A coefficient in resistivity and discrepancy between quantum critical point (QCP) and the center of the superconducting phase suggest the valence mediated superconductivity as that observed in CeCu2 (Si,Ge)2.
