Superconducting and fermi surface properties of single crystal Zr2Co

Atsushi Teruya, Masashi Kakihana, Tetsuya Takeuchi, Dai Aoki, Fuminori Honda, Ai Nakamura, Yoshinori Haga, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Hisatomo Harima, Masato Hedo, Takao Nakama, Yoshichika Onuki

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We succeeded in growing single crystals of a superconductor Zr2Co with the tetragonal structure by the Bridgman method and carried out electrical resistivity, magnetic susceptibility, magnetization, specific heat, and de Haas- van Alphen (dHvA) experiments. Superconductivity is a characteristic revealing that the electronic specific heat at 1.45K in the form of Ce=T in the superconducting state increases not linearly but as a function of √ H p up to a magnetic field close to the upper critical field Hc2 = 11 kOe. The superconducting transition temperature Tsc is found to increase markedly with increasing pressure from Tsc = 5.2K at ambient pressure to 9.5K at 8 GPa. From the dHvA experiment, several kinds of dHvA branches are detected, which are well explained by the results of the energy band calculation. The main conduction electrons are Zr-4d and Co-3d electrons.

本文言語English
論文番号034706
ジャーナルjournal of the physical society of japan
85
3
DOI
出版ステータスPublished - 2016

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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