Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-12-09
Phys. Rev. Lett. 96, 189703 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
1 page
Scientific paper
10.1103/PhysRevLett.96.189703
In a recent paper \cite{Radu}, Radu \textit{et al.} report experimental results they claim to support Bose-Einstein condensation (BEC) of magnons in Cs$_2$CuCl$_4$. It is true that an experimentally measured critical power law scaling exponent in agreement with the BEC universality class would support the realization of a BEC in magnetic systems that order as a canted antiferromagnet. It can be shown, however, that the claim of Radu {\it et al.} is overstated in this instance, because their determination of the critical exponent $\phi$ relies on a model-dependent theoretical approximation to the critical field $H_{\textrm{c1}}$ for which the associated errors are neglected. We show that when these errors are included, the uncertainty in the obtained exponent is so large that the available experimental data cannot be used to differentiate between contending universality classes.
Batista Cristian D.
Fisher Ian R.
Harrison Neil
Jaime Marcelo
Lacerda A.
No associations
LandOfFree
On the Bose-Einstein Condensation of Magnons in Cs2CuCl4 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 On the Bose-Einstein Condensation of Magnons in Cs2CuCl4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Bose-Einstein Condensation of Magnons in Cs2CuCl4 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-371033