2006•Journal of the Physical Society of JapanRequires access
Pressure-Induced Superconductivity Emerging from Antiferromagnetic Phase in CeNiGe3
Hisashi Kotegawa, Keiki Takeda, T. Miyoshi, Satoshi Fukushima, Hiroyuki Hidaka, Tatsuo C. Kobayashi, Teruhiko Akazawa, Yasuo Ohishi, Miho Nakashima, A. Thamizhavel, Rikio Settai, Yoshichika Ōnuki
Open publisher page 26 citations
Abstract
The antiferromagnet CeNiGe 3 exhibits superconductivity under pressure. The Néel temperature initially increases with increasing pressure up to 3 GPa and then becomes zero at a critical pressure ( P C ) that is located at approximately 7 GPa. We found that superconductivity emerges from 1.7 GPa in the antiferromagnetic (AF) phase removed from P C . The superconductivity is realized in a wide pressure region including P C . The coefficient A in the resistivity and the upper critical field ( H c2 ) significantly change against pressure. A feature of CeNiGe 3 is that the moderate heavy fermion state in the AF phase induces superconductivity.