Critical properties and Bose Einstein Condensation in dimer spin systems
arXiv:cond-mat/0701590 · doi:10.1103/PhysRevB.75.140403
Abstract
We analyze the spin relaxation time $1/T_1$ for a system made of weakly coupled one dimensional ladders.This system allows to probe the dimensional crossover between a Luttinger liquid and a Bose-Einstein condensateof magnons. We obtain the temperature dependence of $1/T_1$ in the various dimensional regimes, and discuss the experimental consequences.
4 pages, RevTeX 4, 3 EPS figures