Magnetic-field dependence of the magnetic excitations in ordered$\chem{HoNi_{2}B_{2}C}

The effect of an external magnetic field H on the magnetic excitations in ordered $\chem{HoNi_{2}B_{2}C}$ is investigated by inelastic neutron scattering on single crystals for the first time. A Zeeman-like renormalization of the magnetic excitations is observed at fixed $T=2$$\un{K}$ and $H\paralle...

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Bibliographic Details
Published in:Europhysics letters 2003-08, Vol.63 (4), p.597-602
Main Authors: Cavadini, N., Schneider, M., Allenspach, P., Canfield, P. C., Bourges, Ph
Format: Article
Language:English
Subjects:
75.10.Dg
75.30.Et
78.70.Nx
Online Access:Get full text
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Summary:The effect of an external magnetic field H on the magnetic excitations in ordered $\chem{HoNi_{2}B_{2}C}$ is investigated by inelastic neutron scattering on single crystals for the first time. A Zeeman-like renormalization of the magnetic excitations is observed at fixed $T=2$$\un{K}$ and $H\parallel[1,1,0]$ up to $H=5$$\un{T}$. Above $H\sim 1.1$$\un{T}$ the renormalization occurs linearly, following the expectation for the $\chem{Ho^{3+}}$ crystal electric-field levels at finite fields. However, in the range $0
ISSN:0295-5075
1286-4854
DOI:10.1209/epl/i2003-00568-7