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 SM ISO690:2012SAHASRABUDHE, Anuja, PROSNIKOV, Mikhail A., KOETHE, Thomas C., STEIN, Philipp, TSURKAN, Vladimir, LOIDL, Alois, GRUNINGER, Markus, HEDAYAT, Hamoon, VAN LOOSDRECHT, Paul H.M.M.. Chiral excitations and the intermediate-field regime in the Kitaev magnet α-RuCl3. In: Physical Review Research, 2024, vol. 6, pp. 1-6. ISSN 2643-1564. DOI: https://doi.org/10.1103/PhysRevResearch.6.L022005 |
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  Physical Review Research |
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| Volumul 6 / 2024 / ISSN 2643-1564 | ||||||
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| DOI:https://doi.org/10.1103/PhysRevResearch.6.L022005 | ||||||
| Pag. 1-6 | ||||||
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In the Kitaev magnet α-RuCl3, the existence of a magnetic-field-induced quantum spin-liquid phase and of anyonic excitations is controversially discussed. We address this elusive, exotic phase via helicity-dependent Raman scattering and analyze the Raman optical activity of excitations as a function of magnetic field and temperature. The hotly debated field regime between 7.5 and 10.5T is characterized by clear spectroscopic signatures such as a plateau of the Raman optical activity of the dominant, chiral spin-flip excitation. This provides direct evidence for the existence of a distinct intermediate-field regime with an intriguing ground state featuring chiral excitations. |
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| Cuvinte-cheie Exotic phasis, Field-induced, Helicities, Intermediate fields, Magnetic temperatures, Magnetic-field, Quantum spin liquid, Raman optical activity, Spectroscopic signatures, Spin-liquid phase |
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