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

doi:10.1088/2053-1583/4/1/011005

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 journal › Article › peer-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 language	English
Article number	011005
Journal	2D Materials
Volume	4
Issue number	1
DOIs	https://doi.org/10.1088/2053-1583/4/1/011005
State	Published - 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.

Funders	Funder number
DOE Office of Science
National Science Foundation	DMR-1410428, 1410428

Keywords

2D material
Antiferromagnetism
Ferromagnet
Magnetic force microscopy
ac susceptibility

Access to Document

10.1088/2053-1583/4/1/011005

Cite this

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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.",

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AU - Yi, Jieyu

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AU - Wu, Zhiming

AU - Cao, Guixin

AU - Tang, Siwei

AU - Calder, S. A.

AU - Kent, P. R.C.

AU - Mandrus, David

AU - Gai, Zheng

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