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
3dモノプニクタイト化合物，CrAs，MnPの圧力効果
2019 年 29 巻 4 号 p. 272-282
詳細
2019 年 29 巻 4 号 p. 272-282
In transition-metal monopnictides, CrAs and MnP, CrAs forms a double-helical magnetic structure below TN=270 K accompanied by a strong first-order structural transition, while MnP first undergoes a ferromagnetic transition at Tc=290 K and then adopts a similar double-helical order below Ts=50 K. By using high pressure, we observed superconductivity with a maximum superconducting transition temperature of Tsc=2 K and 1 K under a critical pressure of Pc=0.8 and 8 GPa for CrAs and MnP, respectively. In this review article, we will summarize the achievements of superconductivity in CrAs and MnP.
