Title :
One dimensional behavior of mixed crystal BaCu/sub 2/(Si/sub 1-x/Ge/sub x/)/sub 2/O/sub 7/ observed by submillimeter wave ESR
Author :
Ohta, H. ; Kawakami, K. ; Okubo, S. ; Inagaki, Y. ; Kunimoto, T. ; Hiroi, Z.
Author_Institution :
Molecular Photoscience Res. Center, Kobe Univ., Japan
Abstract :
BaCu/sub 2/(Si/sub 1-x/Ge/sub x/)/sub 2/O/sub 7/ (x=0.65) is a one dimensional antiferromagnet (1D AF) with the staggered g-tensor and Dzyaloshinskii-Moriya (DM) interaction. Although the system is expected to have intrinsic randomness, our submillimeter wave ESR results show the typical behavior of the 1D AF and they are discussed along with the recent ESR theory of Oshikawa and Affleck (Phys. Rev. Lett. vol. 82, p. 5136, 1999).
Keywords :
EPR spectroscopy; antiferromagnetic materials; barium compounds; copper compounds; microwave spectra; paramagnetic resonance; submillimetre wave measurement; 1D AF behavior; 1D behavior; BaCu/sub 2/(SiGe)/sub 2/O/sub 7/; Dzyaloshinskii-Moriya interaction; ESR theory; electron spin resonance theory; intrinsic randomness; mixed crystal BaCu/sub 2/(Si/sub 1-x/Ge/sub x/)/sub 2/O/sub 7/ 1D antiferromagnet; staggered g-tensor; submillimeter wave ESR; Antiferromagnetic materials; Delta modulation; Frequency dependence; Laboratories; Paramagnetic resonance; Performance evaluation; Submillimeter wave measurements; Submillimeter wave technology; Temperature dependence; Temperature distribution;
Conference_Titel :
Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-7423-1
DOI :
10.1109/ICIMW.2002.1076215
