Pressure-induced antiferroquadrupole order in CeTe

Yasuharu Kawarasaki, Takeshi Matsumura, Masafumi Sera, Akira Ochiai

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We have discovered that the magnetic phase diagram of CeTe under high pressure becomes quite similar to that of CeB6, strongly suggesting that an antiferroquadrupolar ordering is realized. At 1.2 GPa, the transition temperature increases from 3 K at 0.5 T to 6.3 K at 14.5 T. Since the crystal-field ground state of CeTe is the Γ7 doublet without a quadrupolar degree of freedom, this ordering is considered to be realized through the off-diagonal matrix element between Γ7 and Γ8 excited state, whose energy level is lowered with increasing the pressure.

Original languageEnglish
Article number023713
Journaljournal of the physical society of japan
Volume80
Issue number2
DOIs
Publication statusPublished - 2011 Feb

Keywords

  • Antiferroquadrupole order
  • CeTe
  • High pressure
  • Kondo effect
  • Magnetic phase diagram

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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