[2204.03158] Spin sensitive transport in RuCl_3/Pt heterostructures: revealing a field-transverse spin anisotropy in a spin liquid candidate Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Condensed Matter > Strongly Correlated Electrons arXiv:2204.03158 (cond-mat) [Submitted on 7 Apr 2022 ( v1 ), last revised 4 Jul 2026 (this version, v2)] Title: Spin sensitive transport in RuCl_3/Pt heterostructures: revealing a field-transverse spin anisotropy in a spin liquid candidate Authors: H. Idzuchi , M. Kimata , S. Okamoto , P. Laurell , N. Mohanta , M. Cothrine , S. E. Nagler , D. Mandrus , A. Banerjee , Y. P. Chen View a PDF of the paper titled Spin sensitive transport in RuCl_3/Pt heterostructures: revealing a field-transverse spin anisotropy in a spin liquid candidate, by H. Idzuchi and 8 other authors View PDF Abstract: Alpha-phase (a-) RuCl_3 has emerged as a possible candidate for a quantum spin liquid (QSL) that promises exotic quasi-particles relevant for fault-tolerant quantum computation. Here, we report spin-sensitive transport measurements using a proximal spin Hall metal -- platinum (Pt) -- to probe magnetic moments in the insulator a-RuCl_3. We observe a spin Hall magnetoresistance (SMR) where both the transverse and longitudinal resistivities of a-RuCl_3/Pt exhibit oscillations as functions of the angle between the in-plane magnetic field and the current, arising from the interplay between the spin Hall effect in Pt and local magnetic moments in a-RuCl3. The oscillations are observed from 1.5 T to 18 T, spanning the range of magnetic fields where zig-zag antiferromagnetic phase, the putative QSL phase, and the partially field-polarized states are reported in a-RuCl_3. The phase of the SMR oscillations suggest that the local moments, regardless of static or fluctuating, in a-RuCl_3 develop an anisotropy with an in-plane quantization axis that aligns largely transverse to the magnetic field for all fields above 1.5 T. Temperature dependance of the SMR revealed that the spin anisotropy has a similar energy scale to reported QSL signatures in a-RuCl_3. The coupling between the spin states within a-RuCl_3 and Pt demonstrated in our experiment opens a transport route to exploring exotic spin phases and device functionalities of QSL materials. Comments: Published version of the title: Unveiling field-transverse spin anisotropy in the spin liquid candidate α-RuCl3 via spin Hall magnetoresistance Subjects: Strongly Correlated Electrons (cond-mat.str-el) ; Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Cite as: arXiv:2204.03158 [cond-mat.str-el] (or arXiv:2204.03158v2 [cond-mat.str-el] for this version) https://doi.org/10.48550/arXiv.2204.03158 Focus to learn more arXiv-issued DOI via DataCite Journal reference: Newton 2, 100505 (2026) Related DOI : https://doi.org/10.1016/j.newton.2026.100505 Focus to learn more DOI(s) linking to related resources Submission history From: Hiroshi Idzuchi [ view email ] [v1] Thu, 7 Apr 2022 01:44:20 UTC (3,370 KB) [v2] Sat, 4 Jul 2026 04:54:08 UTC (2,133 KB) Full-text links: Access Paper: View a PDF of the paper titled Spin sensitive transport in RuCl_3/Pt heterostructures: revealing a field-transverse spin anisotropy in a spin liquid candidate, by H. 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