Magnon spin resonance in the Haldane spin chains of Ni(C2H8N2)NO2ClO4
| Autor: | J.P. Boucher, L.C. Brunel, J.P. Renard, Igor Zaliznyak, T. M. Brill |
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| Rok vydání: | 1992 |
| Předmět: |
Physics
Spin polarization Condensed matter physics Magnon General Physics and Astronomy law.invention Brillouin zone symbols.namesake Quantum spin Hall effect law Excited state symbols Condensed Matter::Strongly Correlated Electrons Hamiltonian (quantum mechanics) Electron paramagnetic resonance Quantum |
| Zdroj: | Physical Review Letters. 69:1699-1702 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.69.1699 |
| Popis: | We present a high-frequency electron spin resonance study of the magnetic transitions occurring between excited states in a Haldane spin system. We show that these transitions are induced between the low-energy magnon states, which develop at the boundary (q\ensuremath{\approxeq}\ensuremath{\pi}) of the Brillouin zone. Our study provides therefore, the first evidence that, in the Haldane phase, the excitations associated with the quantum gaps correspond actually to a s=1 magnetic state. |
| Databáze: | OpenAIRE |
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