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Quantum Critical Behaviour in CuGeO₃

Demishev, S.V.; Pronin, A.A.; Sluchanko, N.E.; Samarin, N.A.; Glushkov, V.V.; Inagaki, Y.; Ohta, H.; Okubo, S.; Oshima, Y.; Markina, M.M.
Funding organisation: Russian Academy of Sciences (Russian Federation); Ministry of Education (Russian Federation); Venture Business Laboratory of Kobe University (Japan)2003

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AbstractAbstract

[en] From high frequency (up to 450 GHz) ESR and low temperature specific heat measurements we find that insertion of 1% Fe and 2% Co in CuGeO₃ matrix smears both spin-Peierls and Neel transitions. For T<30 K we discovered an onset of the power asymptotics of magnetic susceptibility and specific heat characteristic to a quantum critical behaviour. (author)

Primary Subject

CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY (S75)

Source

International Conference on Strongly Correlated Electron System (SCES'2002) - Part 1; Cracow (Poland); 10-13 Jul 2002; INTAS GRANT 00-807; 5 refs., 2 figs.

Record Type

Journal Article

Literature Type

Conference

Journal

Acta Physica Polonica. Series B; ISSN 0587-4254;