Lifshitz transition and metamagnetism: Thermoelectric studies of CeRu2 Si2

M. Boukahil, A. Pourret, G. Knebel, D. Aoki, Y. Onuki, J. Flouquet

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We report field- and temperature-dependent measurements of the thermoelectric power (TEP) across the pseudometamagnetic transition (MMT) in CeRu2Si2. We applied the thermoelectric gradient parallel and perpendicular to the field along the c axis of the tetragonal crystal which is the easy magnetization axis. At the MMT at Hm=7.8 T, a strong anomaly in the TEP is observed for both configurations with opposite signs. The anomaly at Hm becomes a cascade of anomalies at very low temperature which seems to be a generic feature of the TEP at a change in the topology of the Fermi surface (FS) in heavy Fermion multiband systems. Simultaneously, quantum oscillations in the magnetic field dependence of the TEP are observed for both configurations below and above the MMT.

Original languageEnglish
Article number075127
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number7
DOIs
Publication statusPublished - 2014 Aug 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Lifshitz transition and metamagnetism: Thermoelectric studies of CeRu2 Si2'. Together they form a unique fingerprint.

Cite this