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arxiv: cond-mat/0408059 · v1 · submitted 2004-08-03 · ❄️ cond-mat.str-el

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
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M. Kimata K. Koyama M. Motokawa A.V. Kuznetsov
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classification ❄️ cond-mat.str-el
keywords criticalbehaviorcugeo3dopedquantumalongaxescrystallographic
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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.

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