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arXiv · 1509.08249

Superconductivity and Magnetism in Noncentrosymmetric RhGe

A. V. Tsvyashchenko·V. A. Sidorov·A. E. Petrova·L. N. Fomicheva·I. P. Zibrov·V. E. Dmitrienko
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Abstract

RhGe synthesized at high pressure is crystallized in noncentrosymmetric cubic structure of the B20 type. Measurements of the electrical resistivity and magnetization demonstrate a superconducting state below T$_c$ ~ 4.5 K and a weak ferromagnetism below T$_m$ ~ 140 K. Specific heat data confirm the bulk nature of superconductivity in this ferromagnetic superconductor. The superconducting region forms a dome on the P-T diagram with a maximum of T$_c$ near 4 GPa. Ab initio simulations suggest that the observed weak magnetization emerges from the pronounced spin polarization with magnetic quadrupole and toroidal moments located at Rh and Ge sites.

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A. V. Tsvyashchenko, V. A. Sidorov, A. E. Petrova, L. N. Fomicheva, I. P. Zibrov, V. E. Dmitrienko. 2015-09-28. Superconductivity and Magnetism in Noncentrosymmetric RhGe. https://arxiv.org/abs/1509.08249

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