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 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.