| Critical properties and Bose Einstein Condensation in dimer spin systems (2007) | |||||||||
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.. Comment: 4 pages, RevTeX 4, 3 EPS figures | |||||||||
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