Disorder driven quantum critical behavior in CuGeO3 doped with magnetic impurity
S.V. Demishev, A.V. Semeno, N.E. Sluchanko, N.A. Samarin, A.A. Pronin,, V.V. Glushkov, H. Ohta, S. Okubo, M. Kimata, K. Koyama, M. Motokawa, A.V., Kuznetsov
TL;DR
This paper reports on the quantum critical behavior observed in Fe-doped CuGeO3 over a broad temperature range, highlighting anisotropic critical exponents and a novel frequency dependence effect.
Contribution
It presents the first detailed measurement of quantum critical exponents and introduces a new frequency dependence phenomenon in doped CuGeO3.
Findings
Quantum critical behavior observed between 1-40 K
Anisotropic critical exponents for susceptibility
Discovery of frequency dependence of critical exponent
Abstract
For the CuGeO3 doped with 1% of Fe the quantum critical behavior in a wide temperature range 1-40 K is reported. The critical exponents for susceptibility along different crystallographic axes are determined: a=0.34 (B//a and B//c) and a=0.31 (B//b). New effect of the frequency dependence of the critical exponent is discussed.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.