Publication Type
Journal
Journal Name
Physical Review B
Publication Date
Page Number
104413
Volume
88
Issue
10
Abstract
We examine the magnetic excitation spectrum in the S = 2 Heisenberg antiferromagnet CrCl2.
Inelastic neutron scattering measurements on powder samples are able to determine the significant
exchange interactions in this system. A large anisotropy gap is observed in the spectrum below the
N´eel temperature and the ratio of the two largest exchange constants is Jc=Jb = 4:51:6. However,
no sign of a gapped quantum spin liquid excitation was found in the paramagnetic phase.
