Paramagnetic Meissner Effect in Superconducting Rhodium Borides with and without a Magnetic Subsystem

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发表日期：

2024年6月1日

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S. A. Lachenkov,
V. A. Vlasenko,
A. Yu. Tsvetkov,
M. A. Kononov

摘要

Abstract—

We have studied field and temperature dependences of the magnetic moment, M(H) and M(T), for a number of superconducting rhodium borides with the LuRh₄B₄ structure: a “classic” superconductor (YRh₄B₄), a substitutional solid solution containing magnetic ions (Y_0.8Dy_0.2Rh₄B₄), and magnetic superconductors (DyRh_3.8Ru_0.2B₄ and HoRh_3.8Ru_0.2B₄). The results have been used to analyze distinctive features of the paramagnetic Meissner effect in these compounds. It has been shown that the paramagnetic Meissner effect can be due to both the intrinsic magnetic subsystem of the superconductor and small additions of magnetic ions to a parent “classic” superconducting compound.