Pressure-induced antiferromagnetic superconductivity in CeNiGe3: A 73Ge-NQR study under pressure

A. Harada, S. Kawasaki, H. Mukuda, Y. Kitaoka, A. Thamizhavel, Y. Okuda, R. Settai, Y. Onuki, K. M. Itoh, E. E. Haller, H. Harima

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We report on antiferromagnetic (AF) properties of pressure-induced superconductivity in CeNiGe3 via the 73Ge nuclear-quadrupole-resonance (NQR) measurements under pressure (P). The NQR-spectrum measurements have revealed that the incommensurate antiferromagnetic ordering is robust against increasing P with the increase of ordered moment and ordering temperature. Nevertheless the measurements of nuclear spin-lattice relaxation rate (1 / T1) have pointed to the onset of superconductivity as a consequence of Ce-4f electrons delocalized by applying P. The emergence of superconductivity under the development of AF order suggests that a novel type of superconducting mechanism works in this compound.

Original languageEnglish
Pages (from-to)614-616
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 1
DOIs
Publication statusPublished - 2007 Mar

Keywords

  • Antiferromagnetism
  • CeNiGe
  • Heavy fermion
  • NQR under pressure
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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