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Temperature-induced anomalous magnetotransport in the Weyl semimetal Mn3Ge

Authors :
Mingxing Wu
Kouta Kondou
Taishi Chen
Satoru Nakatsuji
Yoshichika Otani
Source :
AIP Advances, Vol 13, Iss 4, Pp 045102-045102-6 (2023)
Publication Year :
2023
Publisher :
AIP Publishing LLC, 2023.

Abstract

The magnetic Weyl semimetallic state can lead to intriguing magnetotransport, such as chiral anomaly and the layered quantum Hall effect. Mn3X (X = Sn, Ge) is a noncollinear antiferromagnetic semimetal where a Weyl semimetallic state is stabilized by time-reversal symmetry breaking. Compared to the well-studied Mn3Sn, the Weyl fermion-induced magnetotransport in Mn3Ge has been merely studied. Here, we report an in-depth study on the magnetotransport in a microfabricated Mn3Ge single crystal from room temperature to 10 K. We reveal an anomalous anisotropic magnetoresistance with fourfold symmetry and a positive high-field longitudinal magnetoresistance below the critical temperature (160–170 K). The possible origin is the temperature-induced tilting of the Weyl nodes. Our study helps to understand the magnetotransport properties in the Weyl fermion system.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
13
Issue :
4
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.4d70f0ffac63451fb4dc25564f6dae26
Document Type :
article
Full Text :
https://doi.org/10.1063/5.0138208