Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field

Details Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field

2012-04-04

arxiv.org/abs/1204.0968v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

The valence state of Ce in a canonical heavy fermion compound CeRu2Si2 has been investigated by synchrotron X-ray absorption spectroscopy at 1.8 K in high magnetic fields of up to 40 T. The valence was slightly larger than for the pure trivalent state (Ce3+: f1), as expected in heavy fermion compounds, and it decreased toward the trivalent state as the magnetic field was increased. The field-induced valence reduction indicates that the itinerant character of the 4f electrons in CeRu2Si2 was suppressed by a strong magnetic field. The suppression was gradual and showed characteristic magnetic field dependence, which reflects the metamagnetism around Hm \sim 8 T. The itinerant character persisted, even at 40 T (\sim 5Hm), suggesting that the Kondo bound state is continuously broken by magnetic fields and that it should completely collapse at fields exceeding 200 T.

Affiliated with

Also associated with

No associations

Rating

Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-32375