Magnon spin resonance in the Haldane spin chains of Ni()
- 14 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (11) , 1699-1702
- https://doi.org/10.1103/physrevlett.69.1699
Abstract
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≊π) 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.This publication has 12 references indexed in Scilit:
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