Non-Fermi-liquid behavior on an iron-based itinerant electron magnet Fe3Mo3N

Takeshi Waki, Shinsuke Terazawa, Yoshikazu Tabata, Fumiyasu Oba, Chishiro Michioka, Kazuyoshi Yoshimura, Shugo Ikeda, Hisao Kobayashi, Kenji Ohoyama, Hiroyuki Nakamura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We report magnetic, calorimetric, and transport properties of an iron-based itinerant electron magnet Fe3Mo3N. Magnetic susceptibility shows a Curie-Weiss behavior at high temperatures and takes a broad maximum at around 75 K. The absence of magnetic long range order was confirmed by 57Fe-Mos̈sbauer and neutron diffraction measurements. C=T shows a divergent behavior following -log T at low temperatures and reaches 128 mJ/(f.u.molK2) at 0.5 K. The deviation from the T2s power law of resistivity also suggests a non-Fermi-liquid (NFL) behavior. The observed C/T and X are enhanced compared with the values estimated from the theoretical density of states, suggesting a strong magnetic enhancement. The NFL behaviors indicate that Fe 3Mo3N is one of the ideal systems located in the vicinity of the ferromagnetic quantum critical point.

Original languageEnglish
Article number043701
Journaljournal of the physical society of japan
Volume79
Issue number4
DOIs
Publication statusPublished - 2010 Apr 1

Keywords

  • Fe3Mo3N
  • Ferromagnetic quantum critical point
  • Non-Fermi liquid

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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