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| Ultima descărcare din IBN: 2023-09-13 15:31 |
 SM ISO690:2012GAO, Shang, ZAHARKO, Oksana, TSURKAN, Vladimir, SU , Yixi, WHITE, Jonathan Stuart, TUCKER, Gregory S., ROESSLI, Bertrand, BOURDAROT, Frederic, SIBILLE, Romain F., CHERNYSHOV, D., FENNELL, Tom, LOIDL, Alois, RUEGG, Ch. Spiral spin-liquid and the emergence of a vortex-like state in MnSc 2 S 4. In: Nature Physics, 2017, vol. 13, pp. 157-161. ISSN 1745-2473. DOI: https://doi.org/10.1038/nphys3914 |
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  Nature Physics |
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| Volumul 13 / 2017 / ISSN 1745-2473 | |
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| DOI:https://doi.org/10.1038/nphys3914 | |
| Pag. 157-161 | |
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Spirals and helices are common motifs of long-range order in magnetic solids, and they may also be organized into more complex emergent structures such as magnetic skyrmions and vortices. A new type of spiral state, the spiral spin-liquid, in which spins fluctuate collectively as spirals, has recently been predicted to exist. Here, using neutron scattering techniques, we experimentally prove the existence of a spiral spin-liquid in MnSc 2 S 4 by directly observing the spiral surface'-a continuous surface of spiral propagation vectors in reciprocal space. We elucidate the multi-step ordering behaviour of the spiral spin-liquid, and discover a vortex-like triple-q phase on application of a magnetic field. Our results prove the effectiveness of the J 1 -J 2 Hamiltonian on the diamond lattice as a model for the spiral spin-liquid state in MnSc 2 S 4 , and also demonstrate a new way to realize a magnetic vortex lattice through frustrated interactions. |
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| Cuvinte-cheie Binary alloys, Crystal lattices, Liquids, magnetism, Manganese alloys, Neutron scattering, Scandium alloys, Vector spaces |
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