In-plane antiferromagnetic moments in axion topological insulator candidate EuIn<sub>2</sub>As<sub>2</sub>

Topological insulator with antiferromagnetic order can serve as an ideal platform for the realization of axion electrodynamics. In this paper, we report a systematic study of the axion topological insulator candidate EuIn₂As₂. A linear energy dispersion across the Fermi level confirms the existence of the proposed hole-type Fermi pocket. Spin-flop transitions occur with magnetic fields applied within the ab-plane while are absent for fields parallel to the c-axis. Anisotropic magnetic phase diagrams are observed and the orientation of the ground magnetic moment is found to be within the ab-plane. The magnetoresistivity for EuIn₂As₂ behaves non-monotonic as a function of field strength. It exhibits angular dependent evolving due to field-driven and temperature-driven magnetic states. These results indicate that the magnetic states of EuIn₂As₂ strongly affect the transport properties as well as the topological nature.

About APS

The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.

Headquarters 1 Physics Ellipse, College Park, MD 20740-3844 (301) 209-3200
Editorial Office 100 Motor Pkwy, Suite 110, Hauppauge, NY 11788 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700

Bulletin of the American Physical Society

APS March Meeting 2020

Volume 65, Number 1

Monday–Friday, March 2–6, 2020; Denver, Colorado

Session J59: Magnetic Weyl semimetals

Abstract: J59.00010 : In-plane antiferromagnetic moments in axion topological insulator candidate EuIn2As2

Presenter:

Authors:

Follow Us

Engage

My APS

Information for

About APS

Abstract: J59.00010 : In-plane antiferromagnetic moments in axion topological insulator candidate EuIn₂As₂