Competing antiferromagnetism in a quasi-2D itinerant ferromagnet: Fe3GeTe2

Jieyu Yi, Houlong Zhuang, Qiang Zou, Zhiming Wu, Guixin Cao, Siwei Tang, S. A. Calder, P. R.C. Kent, David Mandrus, Zheng Gai

Research output: Contribution to journalArticlepeer-review

146 Scopus citations

Abstract

Fe3GeTe2 is known as an air-stable layered metal with itinerant ferromagnetism with a transition temperature of about 220 K. From our extensive dc and ac magnetic measurements, we have determined that the ferromagnetic layers of Fe3GeTe2 actually order antiferromagnetically along the c-axis below 152 K. The antiferromagnetic state was further substantiated by theoretical calculation to be the ground state. A magnetic structure model was proposed to describe the antiferromagnetic ground state as well as competition between antiferromagnetic and ferromagnetic states. Fe3GeTe2 shares many common features with pnictide superconductors and may be a promising system in which to search for unconventional superconductivity.

Original languageEnglish
Article number011005
Journal2D Materials
Volume4
Issue number1
DOIs
StatePublished - Mar 1 2017

Funding

Imaging, magnetic characterization and theoretical calculation of this research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. DGM and JYY acknowledge support from the National Science Foundation under Grant No. NSF DMR-1410428.

FundersFunder number
DOE Office of Science
National Science FoundationDMR-1410428, 1410428

    Keywords

    • 2D material
    • Antiferromagnetism
    • Ferromagnet
    • Magnetic force microscopy
    • ac susceptibility

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