Abstract
The weakly coupled quasi-one-dimensional spin ladder compound (CH3)2CHNH3CuCl3 is studied by neutron scattering in magnetic fields exceeding the critical field of Bose-Einstein condensation of magnons. Commensurate long-range order and the associated Goldstone mode are detected and found to be similar to those in reference to spin-dimer materials. However, for the upper two massive magnon branches, the observed behavior is totally different, culminating in a drastic collapse of excitation bandwidth beyond the transition point.
Original language | English |
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Article number | 167202 |
Journal | Physical review letters |
Volume | 98 |
Issue number | 16 |
DOIs | |
Publication status | Published - 2007 Apr 19 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)