Pressure-dependent magnetization and magnetoresistivity studies on tetragonal FeS (mackinawite): Revealing its intrinsic metallic character

S. J. Denholme, H. Okazaki, S. Demura, K. Deguchi, M. Fujioka, T. Yamaguchi, H. Takeya, M. Elmassalami, H. Fujiwara, T. Wakita, T. Yokoya, Y. Takano

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    The transport and magnetic properties of the tetragonal Fe1+δS were investigated using magnetoresistivity and magnetization within 2 ≤ T ≤ 300 K, H ≤ 70 kOe and P ≤ 3.0 GPa. In addition, room-temperature x-ray diffraction and photoelectron spectroscopy were also applied. In contrast to previously reported nonmetallic character, Fe1+δS is intrinsically metallic but due to a presence of a weak localization such metallic character is not exhibited below room temperature. An applied pressure reduces strongly this additional resistive contribution and as such enhances the temperature range of the metallic character which, for ∼ 3 GPa, is evident down to 75 K. The absence of superconductivity as well as the mechanism behind the weak localization will be discussed.

    Original languageEnglish
    Article number055007
    JournalScience and Technology of Advanced Materials
    Volume15
    Issue number5
    DOIs
    Publication statusPublished - 2014 Oct 1

    Keywords

    • Chalcogenides
    • Disordered solids
    • Localization effects
    • Pnictides

    ASJC Scopus subject areas

    • Materials Science(all)

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