Pressure-Induced Superconductivity in CePtSi₂

Abstract

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 T_N=1.8 K. T_N disappears above 1.2 GPa, and a superconducting phase appears with T_c～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.