Ac susceptibility behaviour of Ce_2Pd_{1-x}Co_{x}Si_3

E. V. Sampathkumaran

Ac susceptibility behaviour of Ce_2Pd_{1-x}Co_{x}Si_3

Strongly Correlated Electrons 2007-05-23 v1 Disordered Systems and Neural Networks

Authors: E. V. Sampathkumaran

Abstract

We report the results of ac susceptibility chi measurements for various compositions of the series, Ce_2Pd_{1-x}Co_xSi_3, in the polycrystalline form, which has been previously reported to undergo a transformation from magnetic ordering to non-magnetic Kondo lattice behavior as x is varied from 0 to 1. A finding of emphasis here is that the features in ac chi data for the compositions, x = 0.6 and 0.7, in the close vicinity of quantum critical point (QCP), are typical of long range magnetic ordering systems, whereas the compositions far away from QCP at the Pd-end including Ce_2PdSi_3 exhibit spin-glass characteristics. This trend is different from hitherto known behavior among Kondo alloys.

Keywords

ac susceptibility Kondo lattice quantum critical point spin glass Ce_2PdCoSi3

Cite

@article{arxiv.cond-mat/0207447,
  title  = {Ac susceptibility behaviour of Ce_2Pd_{1-x}Co_{x}Si_3},
  author = {E. V. Sampathkumaran},
  journal= {arXiv preprint arXiv:cond-mat/0207447},
  year   = {2007}
}

Comments

Proceedings of SCES2002

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