Magnetic excitations from the S=1/2 two-leg ladders in La6Ca8Cu24O41

Authors
Matsuda, M Katsumata, K Eccleston, RS Brehmer, S Mikeska, HJ
Citation
M. Matsuda et al., Magnetic excitations from the S=1/2 two-leg ladders in La6Ca8Cu24O41, J APPL PHYS, 87(9), 2000, pp. 6271-6273
Citations number
32
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
87
Issue
9
Year of publication
2000
Part
3
Pages
6271 - 6273
Database
ISI
SICI code
0021-8979(20000501)87:9<6271:MEFTST>2.0.ZU;2-3
Abstract
We studied the magnetic excitations from the S=1/2 two-leg ladders in La6Ca 8Cu24O41. In order to understand the full dispersion of the magnon branch f or the lowest triplet excitation, effects of the four-spin and the next-nea rest-neighbor (diagonal) exchange interactions are analyzed. We also compar e the parameters obtained from the fit to the full dispersion curve with th ose obtained in the related compounds. (C) 2000 American Institute of Physi cs. [S0021-8979(00)66408-3].