Bose Glass-BEC Transition of Magnons in Tl$_{1-x}$K$_x$CuCl$_3$

Details Bose Glass-BEC Transition of Magnons in Tl$_{1-x}$K$_x$CuCl$_3$ Bose Glass-BEC Transition of Magnons in Tl$_{1-x}$K$_x$CuCl$_3$

2010-06-03

arxiv.org/abs/1006.0584v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

We report the magnetic-field induced Bose glass$-$BEC transition of magnons in Tl$_{1-x}$K$_x$CuCl$_3$ and its critical behavior investigated through specific heat and ESR measurements. The field dependence of the BEC transition temperature $T_{\rm N}$ can be described by the power law $\left[H\,{-}\,H_{\rm c}\right]\,{\propto}\,T_{\rm N}^{\phi}$ near the quantum critical point $H_{\rm c}\,{\sim}\,3.5$ T. The critical exponent ${\phi}$ tends to reach a value smaller than 1/2 with decreasing fitting window in contrast with ${\phi}\rightarrow 3/2$ for the standard BEC in pure system. At sufficiently low temperatures, the ESR line shape for $H\,{\simeq}\,H_{\rm c}$ is intermediate between Gaussian and Lorentzian. This indicates the localization of magnons for $H\,{<}H_{\rm c}$ at T=0.

Affiliated with

Also associated with

No associations

Rating

Bose Glass-BEC Transition of Magnons in Tl$_{1-x}$K$_x$CuCl$_3$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bose Glass-BEC Transition of Magnons in Tl$_{1-x}$K$_x$CuCl$_3$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bose Glass-BEC Transition of Magnons in Tl$_{1-x}$K$_x$CuCl$_3$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-513443