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Multiparticle states in the S = 1 chain system CsNiCl3.
- Source :
-
Physical review letters [Phys Rev Lett] 2001 Jul 02; Vol. 87 (1), pp. 017201. Date of Electronic Publication: 2001 Jun 15. - Publication Year :
- 2001
-
Abstract
- A continuum of magnetic states has been observed by neutron scattering from the spin-1 chain compound CsNiCl3 in its disordered gapped one-dimensional phase. Results using both triple-axis and time-of-flight spectrometers show that around the antiferromagnetic point Qc = pi, the continuum lies higher in energy than the Haldane gapped excitations. At 6 K the integrated intensity of the continuum is about 12(2)% of the total spectral weight. This result is considerably larger than the 1%-3% weight predicted by the nonlinear sigma model for the three-particle continuum.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 87
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 11461492
- Full Text :
- https://doi.org/10.1103/PhysRevLett.87.017201