Abstract
The low-energy dynamics of the spin-gap magnet TlCuCl 3 is studied. Closing of the energy gap by a magnetic field at the critical field H c leads to the formation of the field-induced transverse antiferromagnetic order. The magnetic resonance technique allows to probe an energy range 0.05–0.5 meV hardly accessible by other means. The measured spin-excitation spectra are described quantitatively within the framework of the effective field theory under an assumption of a weak anisotropy of the exchange interaction. Model calculations demonstrate that low energy dynamics at the critical field is strongly influenced by the longitudinal oscillations of the order parameter.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
