The magnetic properties of the van der Waals magnetic topological insulators $MnBi_2Te_4$ and $MnBi_4Te_7$ are investigated by magnetotransport measurements. We evidence that the relative strength of the interlayer exchange coupling J to the uniaxial anisotropy K controls a transition from an A-type antiferromagnetic order to a ferromagneticlike metamagnetic state. A bilayer Stoner-Wohlfarth model allows us to describe this evolution, as well as the typical angular dependence of specific signatures, such as the spin-flop transition of the uniaxial antiferromagnet and the switching field of the metamagnet.
Description
Phys. Rev. Lett. 124, 197201 (2020) - Metamagnetism of Weakly Coupled Antiferromagnetic Topological Insulators
%0 Journal Article
%1 PhysRevLett.124.197201
%A Tan, Aoyu
%A Labracherie, Valentin
%A Kunchur, Narayan
%A Wolter, Anja U. B.
%A Cornejo, Joaquin
%A Dufouleur, Joseph
%A Büchner, Bernd
%A Isaeva, Anna
%A Giraud, Romain
%D 2020
%I American Physical Society
%J Phys. Rev. Lett.
%K b
%N 19
%P 197201
%R 10.1103/PhysRevLett.124.197201
%T Metamagnetism of weakly coupled antiferromagnetic topological insulators
%U https://link.aps.org/doi/10.1103/PhysRevLett.124.197201
%V 124
%X The magnetic properties of the van der Waals magnetic topological insulators $MnBi_2Te_4$ and $MnBi_4Te_7$ are investigated by magnetotransport measurements. We evidence that the relative strength of the interlayer exchange coupling J to the uniaxial anisotropy K controls a transition from an A-type antiferromagnetic order to a ferromagneticlike metamagnetic state. A bilayer Stoner-Wohlfarth model allows us to describe this evolution, as well as the typical angular dependence of specific signatures, such as the spin-flop transition of the uniaxial antiferromagnet and the switching field of the metamagnet.
@article{PhysRevLett.124.197201,
abstract = {The magnetic properties of the van der Waals magnetic topological insulators $MnBi_2Te_4$ and $MnBi_4Te_7$ are investigated by magnetotransport measurements. We evidence that the relative strength of the interlayer exchange coupling J to the uniaxial anisotropy K controls a transition from an A-type antiferromagnetic order to a ferromagneticlike metamagnetic state. A bilayer Stoner-Wohlfarth model allows us to describe this evolution, as well as the typical angular dependence of specific signatures, such as the spin-flop transition of the uniaxial antiferromagnet and the switching field of the metamagnet.},
added-at = {2021-05-27T10:10:58.000+0200},
author = {Tan, Aoyu and Labracherie, Valentin and Kunchur, Narayan and Wolter, Anja U. B. and Cornejo, Joaquin and Dufouleur, Joseph and Büchner, Bernd and Isaeva, Anna and Giraud, Romain},
biburl = {https://www.bibsonomy.org/bibtex/252f06f02b8b4427c9e489a8112592ee9/ctqmat},
day = 13,
description = {Phys. Rev. Lett. 124, 197201 (2020) - Metamagnetism of Weakly Coupled Antiferromagnetic Topological Insulators},
doi = {10.1103/PhysRevLett.124.197201},
interhash = {272c6a2c29a18523fd301ac73a26a38c},
intrahash = {52f06f02b8b4427c9e489a8112592ee9},
journal = {Phys. Rev. Lett.},
keywords = {b},
month = {05},
number = 19,
numpages = {6},
pages = 197201,
publisher = {American Physical Society},
timestamp = {2023-10-13T11:41:35.000+0200},
title = {Metamagnetism of weakly coupled antiferromagnetic topological insulators},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.124.197201},
volume = 124,
year = 2020
}