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Document type:
Zeitschriftenaufsatz 
Author(s):
Kenzelmann, M.; Zheludev, A.; Raymond, S.; Ressouche, E.; Masuda, T.; B̈oni, P.; Kakurai, K.; Tsukada, I.; Uchinokura, K.; Coldea, R. 
Title:
Spin Waves and Magnetic Ordering in the Quasi-One-Dimensional $S=\frac{1}{2}$ Antiferromagnet ${\mathrm{BaCu}}_{2}{\mathrm{Si}}_{2}{\mathrm{O}}_{7}$ 
Abstract:
Elastic and inelastic neutron scattering were used to study the ordered phase of the quasi-one-dimensional spin-1/2 antiferromagnet BaCu2Si2O7. The previously proposed model for the low-temperature magnetic structure was confirmed. Spin-wave dispersion along several reciprocal-space directions was measured and interchain, as well as in-chain exchange constants were determined. A small gap in the spin-wave spectrum was observed and attributed to magnetic anisotropy effects. The results are discus...    »
 
Journal title:
Physical Review B 
Year:
2001 
Journal volume:
64 
Month:
jul 
Journal issue:
Pages contribution:
054422