Decoupling between field-instabilities of antiferromagnetism and pseudo-metamagnetism in Rh-doped CeRu 2Si 2 Kondo lattice

Dai Aoki, Carley Paulsen, Hisashi Kotegawa, Frédéric Hardy, Christoph Meingast, Pierre Haen, Mounir Boukahil, William Knafo, Eric Ressouche, Stephane Raymond, Jacques Flouquet

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Doping Kondo lattice system CeRu 2Si 2 with Rh-8% (Ce(Ru 0.92Rh 0.08) 2Si 2) leads to drastic consequences due to the mismatch of the lattice parameters between CeRu 2Si 2 and CeRh 2Si 2. A large variety of experiments clarifies the unusual properties of the ground state induced by the magnetic field from longitudinal antiferromagnetic (AF) mode at H = 0 to polarized paramagnetic phase in very high magnetic field. The separation between AF phase, paramagnetic phase and polarized paramagnetic phase varying with temperature, magnetic field and pressure is discussed on the basis of the experiments down to very low temperature. Similarities and differences between Rh and La substituted alloys are discussed with emphasis on the competition between transverse and longitudinal AF modes, and ferromagnetic fluctuations.

Original languageEnglish
Article number034711
Journaljournal of the physical society of japan
Volume81
Issue number3
DOIs
Publication statusPublished - 2012 Mar 1
Externally publishedYes

Keywords

  • Antiferromagnetism
  • CeRu Si
  • High pressure
  • La-doping
  • Magnetization
  • Neutron diffraction
  • Pseudo-metamagnetism
  • Resistivity
  • Rh-doping
  • Specific heat
  • Thermal expansion

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Aoki, D., Paulsen, C., Kotegawa, H., Hardy, F., Meingast, C., Haen, P., Boukahil, M., Knafo, W., Ressouche, E., Raymond, S., & Flouquet, J. (2012). Decoupling between field-instabilities of antiferromagnetism and pseudo-metamagnetism in Rh-doped CeRu 2Si 2 Kondo lattice. journal of the physical society of japan, 81(3), [034711]. https://doi.org/10.1143/JPSJ.81.034711