Amplitude modes in three-dimensional spin dimers away from quantum critical point
Magnetic excitations of long-range ordered localized spin systems are generally well described by the linear spin-wave theory which accounts for phase fluctuations of the order parameter. In contrast, quasiparticles associated with amplitude fluctuations are only observed in a few quantum antiferrom...
Main Authors: | , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
American Physical Society
2019-11-01
|
Series: | Physical Review Research |
Online Access: | http://doi.org/10.1103/PhysRevResearch.1.033111 |