Anisotropy-Induced Soliton Excitation in Magnetized Strong-Rung Spin Ladders.
- Krasnikova YV P. L. Kapitza Institute for Physical Problems, RAS, Kosygina 2, 119334 Moscow, Russia.
- Furuya SC Condensed Matter Theory Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
- Glazkov VN P. L. Kapitza Institute for Physical Problems, RAS, Kosygina 2, 119334 Moscow, Russia.
- Povarov KY Laboratory for Solid State Physics, ETH Zürich, 8093 Zürich, Switzerland.
- Blosser D Laboratory for Solid State Physics, ETH Zürich, 8093 Zürich, Switzerland.
- Zheludev A Laboratory for Solid State Physics, ETH Zürich, 8093 Zürich, Switzerland.
- 2020-07-24
Published in:
- Physical review letters. - 2020
English
We report low temperature electron spin resonance experimental and theoretical studies of an archetype S=1/2 strong-rung spin ladder material (C_{5}H_{12}N)_{2}CuBr_{4}. Unexpected dynamics is detected deep in the Tomonaga-Luttinger spin liquid regime. Close to the point where the system is half-magnetized (and believed to be equivalent to a gapless easy plane chain in zero field) we observed orientation-dependent spin gap and anomalous g-factor values. Field theoretical analysis demonstrates that the observed low-energy excitation modes in magnetized (C_{5}H_{12}N)_{2}CuBr_{4} are solitonic excitations caused by Dzyaloshinskii-Moriya interaction presence.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.125.027204
- PMID 32701328
- Persistent URL
- https://sonar.ch/global/documents/77873
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