Evolution toward quantum critical end point in UGe2

Hisashi Kotegawa, Valentin Taufour, Aoki Dai, Georg Knebel, Jacques Flouquet

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65 Citations (Scopus)


We report on Hall resistivity and electrical resistivity measurements under pressure and magnetic field in UGe2 with ferromagnetic (FM) tricriticality. The Hall resistivity sensitively detects the first order metamagnetic transition from a paramagnetic (PM) phase to a FM phase in a large pressure range almost up to the quantum critical end point (QCEP). The drastic change in the Fermi surface at the PM-FM transition is detected up to the vicinity of the QCEP, while a strong modification in the field variation of the inelastic scattering between electrons is observed toward the QCEP. The comparison with the theoretical predictions is made.

Original languageEnglish
Article number083703
Journaljournal of the physical society of japan
Issue number8
Publication statusPublished - 2011 Aug
Externally publishedYes


  • Hall effect
  • Metamagnetism
  • Quantum critical end point
  • UGe

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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