@article{f5e990c101ba41e78b3d8e04d41d2ad7,
title = "Excitations from a Bose-Einstein condensate of magnons in coupled spin ladders",
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.",
author = "Garlea, {V. O.} and A. Zheludev and T. Masuda and H. Manaka and Regnault, {L. P.} and E. Ressouche and B. Grenier and Chung, {J. H.} and Y. Qiu and K. Habicht and K. Kiefer and M. Boehm",
year = "2007",
month = apr,
day = "19",
doi = "10.1103/PhysRevLett.98.167202",
language = "English",
volume = "98",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "16",
}