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

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Abstract

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.

Original languageEnglish
Article number034706
Journaljournal of the physical society of japan
Volume85
Issue number3
DOIs
Publication statusPublished - 2016 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Teruya, A., Kakihana, M., Takeuchi, T., Aoki, D., Honda, F., Nakamura, A., Haga, Y., Matsubayashi, K., Uwatoko, Y., Harima, H., Hedo, M., Nakama, T., & Onuki, Y. (2016). Superconducting and fermi surface properties of single crystal Zr2Co. journal of the physical society of japan, 85(3), [034706]. https://doi.org/10.7566/JPSJ.85.034706