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A theoretical study of magnetic excitations in disordered spin-Peierls systems

✍ Scribed by M Saito; H Fukuyama

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
97 KB
Volume
60
Category
Article
ISSN
0022-3697

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✦ Synopsis

It is now established that disorder in a spin-Peierls system can result in long-range-ordered staggered moments, whose amplitudes vary spatially. In such a system two kinds of magnetic excitations are expected due to antiferromagnetic orderings and dimerization. We investigate them phenomenologically and obtain gapless antiferromagnetic spin wave mode and gapped dimerization mode with intrinsic broadenings. These results are compared with experiments.

πŸ“œ SIMILAR VOLUMES

The intermediate state of the spin-peier
The intermediate state of the spin-peierls system TTF-AuBDT: A magnetic and specific heat study
✍ W.H. Korving; G.J. Kramer; R.A. Steeman; H.B. Brom; L.J. De Jongh; M. Fujita; K. πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science βš– 769 KB

We report measurements of the differential susceptibility, magnetization and specific heat on the field dependent spin-Peierls transition in tetrathiafulvalene-gold-bisdithiolene (TI'F-AuBDT). Temperature-, field-and frequency ranges are extended in comparison with previous studies. The data confirm