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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2204.03158 |
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| _version_ | 1866914503778631680 |
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| author | Idzuchi, H. Kimata, M. Okamoto, S. Laurell, P. Mohanta, N. Cothrine, M. Nagler, S. E. Mandrus, D. Banerjee, A. Chen, Y. P. |
| author_facet | Idzuchi, H. Kimata, M. Okamoto, S. Laurell, P. Mohanta, N. Cothrine, M. Nagler, S. E. Mandrus, D. Banerjee, A. Chen, Y. P. |
| contents | Alpha-phase (a-) RuCl_3 has emerged as a prime candidate for a quantum spin liquid (QSL) that promises exotic quasiparticles relevant for fault-tolerant quantum computation. Here, we report spin sensitive transport measurements to probe spin correlation in a-RuCl_3 using a proximal spin Hall metal platinum (Pt). Both transverse and longitudinal resistivities exhibit oscillations as function of the angle between an in-plane magnetic field and the current, akin to previously measured spin Hall magnetoresistance (SMR) in antiferromagnet/Pt heterostructures. The oscillations are observed from 1.5 T to 18 T, both within and beyond the magnetic field range where the antiferromagnetic order and QSL state are reported in a-RuCl_3. The SMR oscillations show that spins in a-RuCl3 are largely locked to an in-plane quantization axis transverse to the magnetic field, constituting a continuous-symmetry-broken state that does not necessarily represent a long-range order. This robust anisotropy of spin axis uncovers critical energy scales connected with reported QSL signatures in a-RuCl_3. Simulations suggest a predominantly antiferromagnetic correlation to moderately high magnetic-fields, that may support the SMR oscillations. The coupling of 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2204_03158 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Spin sensitive transport in a spin liquid material: revealing a robustness of spin anisotropy Idzuchi, H. Kimata, M. Okamoto, S. Laurell, P. Mohanta, N. Cothrine, M. Nagler, S. E. Mandrus, D. Banerjee, A. Chen, Y. P. Strongly Correlated Electrons Mesoscale and Nanoscale Physics Alpha-phase (a-) RuCl_3 has emerged as a prime candidate for a quantum spin liquid (QSL) that promises exotic quasiparticles relevant for fault-tolerant quantum computation. Here, we report spin sensitive transport measurements to probe spin correlation in a-RuCl_3 using a proximal spin Hall metal platinum (Pt). Both transverse and longitudinal resistivities exhibit oscillations as function of the angle between an in-plane magnetic field and the current, akin to previously measured spin Hall magnetoresistance (SMR) in antiferromagnet/Pt heterostructures. The oscillations are observed from 1.5 T to 18 T, both within and beyond the magnetic field range where the antiferromagnetic order and QSL state are reported in a-RuCl_3. The SMR oscillations show that spins in a-RuCl3 are largely locked to an in-plane quantization axis transverse to the magnetic field, constituting a continuous-symmetry-broken state that does not necessarily represent a long-range order. This robust anisotropy of spin axis uncovers critical energy scales connected with reported QSL signatures in a-RuCl_3. Simulations suggest a predominantly antiferromagnetic correlation to moderately high magnetic-fields, that may support the SMR oscillations. The coupling of 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. |
| title | Spin sensitive transport in a spin liquid material: revealing a robustness of spin anisotropy |
| topic | Strongly Correlated Electrons Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2204.03158 |