Quantum critical behavior induced by Mn impurity in CuGeO3

Details Quantum critical behavior induced by Mn impurity in CuGeO3 Quantum critical behavior induced by Mn impurity in CuGeO3

2005-07-15

arxiv.org/abs/cond-mat/0507365v1

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, submitted to SCES05 proceedings

Scientific paper

10.1016/j.physb.2006.01.046

Results of high frequency (60-315 GHz) studies of ESR in CuGeO3 single crystals containing 0.9% of Mn impurity are reported. Quantitative EPR line shape analysis allowed concluding that low temperature magnetic susceptibility for T <40 K diverges following power law with the critical exponent 0.81 and therefore manifests onset of a quantum critical (QC) regime. We argue that transition into Griffiths phase occurs at TG~40 K and disorder produced by Mn impurity in quantum spin chains of CuGeO3 may lead to co-existence of the QC regime and spin-Peierls dimerisation.

Affiliated with

Also associated with

No associations

Rating

Quantum critical behavior induced by Mn impurity in CuGeO3 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 Quantum critical behavior induced by Mn impurity in CuGeO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum critical behavior induced by Mn impurity in CuGeO3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-411371