Quasielastic neutron scattering in the high-field phase of a Haldane antiferromagnet |
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| Authors: | Zheludev A Honda Z Chen Y Broholm C L Katsumata K Shapiro S M |
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| Institution: | Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA. |
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| Abstract: | Inelastic neutron scattering experiments on the Haldane-gap quantum antiferromagnet Ni(C5D14N2)2-N3(PF6) are performed in magnetic fields below and above the critical field H(c) at which the gap closes. Quasielastic neutron scattering is found for H>H(c), indicating topological excitations in the high-field phase. |
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