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arXiv · 1307.3643

Single Crystal Growth, Transport, and Electronic Band Structure of YCoGa$_5$

Xiangde Zhu·Wenjian Lu·Wei Ning·Zhe Qu·Li Li·T. F. Qi·Gang Cao·Cedomir Petrovic·Yuheng Zhang
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Abstract

Single crystal of YCoGa5 has been grown via Ga self-flux. In this paper, we report the single crystal growth, crystallographic parameters, resistivity, heat capacity, and band structure results of YCoGa5. YCoGa5 accommodates the HoCoGa5 type structure (space group P4/mmm (No. 123), Z = 1, a = 4.2131(6) A, c = 6.7929(13) A, which is isostructural to the extensively studied heavy fermion superconductor system CeMIn5 (M = Co, Rh, Ir) and the unconventional superconductor PuCoGa5 with Tc = 18.5 K. No superconductivity is observed down to 1.75 K. Band structure calculation results show that its band at the Fermi level is mainly composed of Co-3d and Ga-4p electrons states, which explains its similarity of physical properties to YbCoGa5 and LuCoGa5.

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Xiangde Zhu, Wenjian Lu, Wei Ning, Zhe Qu, Li Li, T. F. Qi, Gang Cao, Cedomir Petrovic, Yuheng Zhang. 2013-07-13. Single Crystal Growth, Transport, and Electronic Band Structure of YCoGa$_5$. https://doi.org/10.1016/j.jallcom.2013.06.127

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