Enhancement of the Superconducting Transition Temperature with Hydrostatic Pressure in Ca_{3}Ir_{4}Sn_{13} Single Crystals

Swee K. Goh; Lina E. Klintberg; Patricia L. Alireza; David A. Tompsett; Jinhu Yang; Bin Chen; Kazuyoshi Yoshimura; F. Malte Grosche

arXiv · 1105.3941

Enhancement of the Superconducting Transition Temperature with Hydrostatic Pressure in Ca_{3}Ir_{4}Sn_{13} Single Crystals

Swee K. Goh·Lina E. Klintberg·Patricia L. Alireza·David A. Tompsett·Jinhu Yang·Bin Chen·Kazuyoshi Yoshimura·F. Malte Grosche

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Abstract

We report high pressure magnetic susceptibility and electrical resistivity measurements on Ca_{3}Ir_{4}Sn_{13} single crystals up to 60 kbar. These measurements allow us to follow the evolution of the superconducting critical temperature T_c, the resistivity anomaly temperature T*, the superconducting coherence length and the Fermi velocity under pressure. The pressure-temperature phase diagram constructed for Ca_{3}Ir_{4}Sn_{13} shows a dome-shaped pressure dependence of T_c. The initial rise in T_c, which is accompanied by a decrease in T*, is consistent with a reduction in the partial gapping of the Fermi surface under pressure.

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Swee K. Goh, Lina E. Klintberg, Patricia L. Alireza, David A. Tompsett, Jinhu Yang, Bin Chen, Kazuyoshi Yoshimura, F. Malte Grosche. 2011-05-19. Enhancement of the Superconducting Transition Temperature with Hydrostatic Pressure in Ca_{3}Ir_{4}Sn_{13} Single Crystals. https://arxiv.org/abs/1105.3941

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