Anomalous transport properties via the competition between the RKKY interaction and the Kondo effect in Ce xLa 1-xRu 2Si 2

Yasunobu Shimizu, Yuji Matsumoto, Kosuke Aoki, Noriaki Kimura, Haruyoshi Aoki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We have performed an extensive study on the electronic transport properties of Ce xLa 1-xRu 2Si 2. At zero field or under the fields parallel to the hard axis of magnetization, the residual resistivity, magnetoresistivity and Hall resistivity are found to be most enhanced around x = 0:85 in the antiferromagnetic state. On the other hand, the high magnetic field along the easy axis is effective to suppress the enhancement. The coherence temperature derived from the temperature variation of Hall coefficient becomes equal to the antiferromagnetic transition temperature at x = 0:85, indicating that the competition between the coherence of the Kondo singlet and the long range magnetic order is responsible for the enhancement. The competition is likely to affect also the magnetic properties in the antiferromagnetic state. The comparison with the de Haas-van Alphen effect measurements suggests that the enhancement is likely to be due to the increase in scattering. The present results are compared with the theory by Hattori and Miyake.

Original languageEnglish
Article number044707
Journaljournal of the physical society of japan
Volume81
Issue number4
DOIs
Publication statusPublished - 2012 Apr

Keywords

  • Ce La Ru Si
  • Kondo effect
  • RKKY interaction
  • Transport properties

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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