Effect of Co impurities on superconductivity of FeSe 0.4Te 0.6 single crystals

Fuyuki Nabeshima; Yusuke Kobayashi; Yoshinori Imai; Ichiro Tsukada; Atsutaka Maeda

doi:10.1143/JJAP.51.010102

Effect of Co impurities on superconductivity of FeSe _0.4Te _0.6 single crystals

Fuyuki Nabeshima, Yusuke Kobayashi, Yoshinori Imai, Ichiro Tsukada, Atsutaka Maeda

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The effect of Co doping on the supercoductivity of FeSe _0.4Te _0.6 single crystals is investigated. The superconducting transition temperature decreases linearly for Co doping at a rate of -0.75K/(Co%). On the other hand, the increase in residual resistivity is less than 50μΩ cm for 4% Co doping. These data are consistent with the interband scattering mechanism of superconductivity with the sign change (s± symmetry).

Original language	English
Article number	010102
Journal	Japanese journal of applied physics
Volume	51
Issue number	1
DOIs	https://doi.org/10.1143/JJAP.51.010102
Publication status	Published - 2012 Jan
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "The effect of Co doping on the supercoductivity of FeSe 0.4Te 0.6 single crystals is investigated. The superconducting transition temperature decreases linearly for Co doping at a rate of -0.75K/(Co%). On the other hand, the increase in residual resistivity is less than 50μΩ cm for 4% Co doping. These data are consistent with the interband scattering mechanism of superconductivity with the sign change (s± symmetry).",

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AU - Maeda, Atsutaka

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