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Title: Spin-Lattice Interaction in the Quasi-One-Dimensional Helimagnet LiCu2O2

Abstract

The field dependence of the electron spin resonance in a helimagnet LiCu{sub 2}O{sub 2} was investigated for the first time. In the paramagnetic state, a broad resonance line was observed corresponding to a g factor of 2.3. In the critical regime, around the paramagnetic to helimagnetic phase transition the resonance broadens and shifts to higher frequencies. A narrow signal is recovered at a low temperature, corresponding to a spin gap of 1.4 meV in zero field. A comprehensive model of the magnons is presented, using exchange parameters from neutron scattering and the spin anisotropy determined here. The role of the quantum fluctuations is discussed.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
913981
Report Number(s):
BNL-78549-2007-JA
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0801448
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. Lett.; Journal Volume: 97
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ANISOTROPY; ELECTRON SPIN RESONANCE; FLUCTUATIONS; MAGNONS; NEUTRONS; RESONANCE; SCATTERING; SPIN; NSLS; national synchrotron light source

Citation Formats

Mihaly,L., Dora, B., Vanyolos, A., Berger, H., and Forro, L. Spin-Lattice Interaction in the Quasi-One-Dimensional Helimagnet LiCu2O2. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.97.067206.
Mihaly,L., Dora, B., Vanyolos, A., Berger, H., & Forro, L. Spin-Lattice Interaction in the Quasi-One-Dimensional Helimagnet LiCu2O2. United States. doi:10.1103/PhysRevLett.97.067206.
Mihaly,L., Dora, B., Vanyolos, A., Berger, H., and Forro, L. Sun . "Spin-Lattice Interaction in the Quasi-One-Dimensional Helimagnet LiCu2O2". United States. doi:10.1103/PhysRevLett.97.067206.
@article{osti_913981,
title = {Spin-Lattice Interaction in the Quasi-One-Dimensional Helimagnet LiCu2O2},
author = {Mihaly,L. and Dora, B. and Vanyolos, A. and Berger, H. and Forro, L.},
abstractNote = {The field dependence of the electron spin resonance in a helimagnet LiCu{sub 2}O{sub 2} was investigated for the first time. In the paramagnetic state, a broad resonance line was observed corresponding to a g factor of 2.3. In the critical regime, around the paramagnetic to helimagnetic phase transition the resonance broadens and shifts to higher frequencies. A narrow signal is recovered at a low temperature, corresponding to a spin gap of 1.4 meV in zero field. A comprehensive model of the magnons is presented, using exchange parameters from neutron scattering and the spin anisotropy determined here. The role of the quantum fluctuations is discussed.},
doi = {10.1103/PhysRevLett.97.067206},
journal = {Phys. Rev. Lett.},
number = ,
volume = 97,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}