Electrical resistivity and Hall effect in the normal state of synthetic mineral superconductor Rh₁₇S₁₅

Miassite Rh₁₇S₁₅ is a rare unconventional mineral superconductor with Tc=5.4 K [1] and nodal superconducting gap structure [2]. Similar to other unconventional superconductors, for example, cuprates and heavy fermions, it shows anomalous normal state electronic transport with pronounced feature in the temperature dependent resistivity and a sign change of the Hall resistivity at around 100 K [3]. We study the response of these transport anomalies to the variation of the scattering rate. The controlled disorder level was introduced by low-temperature irradiation by relativistic 2.5 MeV electrons in liquid hydrogen environment. We find strong Matthiessen rule violation and suppression of the Hall effect anomaly with disorder.

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[2] Hyunsoo Kim, Makariy A. Tanatar, Marcin Kończykowski, Romain Grasset, Udhara S. Kaluarachchi, Serafim Teknowijoyo, Kyuil Cho, Aashish Sapkota, John M. Wilde, Matthew J. Krogstad, Sergey L. Bud'ko, Philip M.R. Brydon, Paul C. Canfield, and Ruslan Prozorov, Communications Materials, 5, 17 (2024).

[3] R. H. Naren, A. Thamizhavel, A.K. Nigam, and S. Ramakrishnan, Phys. Rev. Lett. 100, 026404 (2008).