DocumentCode
3056796
Title
Millimeter wave ESR measurements in the frustrated antiferromagnetic spin chain system LiCu2O2
Author
Fujita, T. ; Mitsudo, S. ; Goda, G. ; Idehara, T. ; Motokawa, M. ; Bush, A. ; Vasilie, A.
Author_Institution
Res. Center for Dev. of Far Infrared Region, Fukui Univ., Japan
fYear
2004
fDate
27 Sept.-1 Oct. 2004
Firstpage
391
Lastpage
392
Abstract
Millimeter wave ESR measurements were performed in high magnetic field on the frustrated antiferromagnetic spin chain system LiCu2O2. This system has been thought to be a dimer liquid state, which collapses into an antiferromagnetic order transition at 23 K. The absorptions in the ESR spectra were observed both in the dimer liquid state and the ordered state. The line width and resonance field of the ESR spectra in the ordered state shows monotonical temperature dependence, which may indicate the absence of the additional ordered state below 9 K proposed by the other group. The frequency dependence at 4 K were performed in the ordered state up to 220 GHz. Unusual features were realized which crosses the resonance field of the g=2. This feature differs from the one in the simple antiferromagnetic resonance.
Keywords
antiferromagnetic materials; antiferromagnetic resonance; lithium compounds; millimetre wave measurement; paramagnetic resonance; paramagnetic-antiferromagnetic transitions; ESR spectra; LiCu2O2; antiferromagnetic order transition; antiferromagnetic resonance; antiferromagnetic spin chain system; dimer liquid state; frequency dependence; magnetic field; millimeter wave ESR measurements; monotonical temperature dependence; ordered state; Antiferromagnetic materials; Copper; Diodes; Frequency dependence; Frequency measurement; Magnetic field measurement; Magnetic resonance; Oscillators; Paramagnetic resonance; Temperature dependence;
fLanguage
English
Publisher
ieee
Conference_Titel
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN
0-7803-8490-3
Type
conf
DOI
10.1109/ICIMW.2004.1422126
Filename
1422126
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