Antiferromagnetic CeCoGe2.1Si0.9 Kondo lattice under pressure

We report on electrical resistivity measurements of the anti ferromagne tic CeCoGe2.1Si0.9 Kondo lattice under hydrostatic pressures, P similar to 11 kbar. Pressure induces a quantum critical point (QCP) at P-C approximate to 6.2 kbar. Around the QCP, the electrical resistivity shows a nearly linear temperature dependence over more than one decade of temperatures, which is associated with a non-Fermi liquid behavior. The pressure dependence of residual resistivity suggests that quantum criticality in our system is controlled mainly by the coexistence between the mechanisms of the spin fluctuations and the Griffiths phase. (C) 2007 Elsevier B.V. All rights reserved.

Published in:
Physica B-Condensed Matter, 403, 1233-1235
Presented at:
International Conference on Strongly Correlated Electron Systems (SCES 2007), Houston, TX, May 13-18, 2007

 Record created 2010-11-30, last modified 2018-09-25

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