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| Home > Publications database > Direct observation of low energy nuclear spin excitations in HoCrO 3 by high resolution neutron spectroscopy |
| Journal Article | FZJ-2013-02818 |
; ; ; ;
2013
IOP Publ.
Bristol
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Please use a persistent id in citations: doi:10.1088/0953-8984/25/28/286003
Abstract: We have investigated low energy nuclear spin excitations in the strongly correlated electron compound HoCrO3. Weobserve clear inelastic peaks at E D 22:18 0:04 eV in both energy loss and gain sides. The energy of the inelasticpeaks remains constant in the temperature range 1.5–40 K at which they are observed. The intensity of the inelasticpeak increases at first with increasing temperature and then decreases at higher temperatures. The temperaturedependence of the energy and intensity of the inelastic peaks is very unusual compared to that observed in other Nd, Co,V and also simple Ho compounds. Huge quasielastic scattering appears at higher temperatures presumably due to thefluctuating electronic moments of the Ho ions that get increasingly disordered at higher temperatures. The strongquasielastic scattering may also originate in the first Ho crystal-field excitations at about 1.5 meV.
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