Pressure tuning of the anomalous Hall effect in the chiral antiferromagnet Mn3Ge

Dos Reis RD, Zavareh MG, Ajeesh MO, Kutelak LO, Sukhanov AS, Singh S, Noky J, Sun Y, Fischer JE, Manna K, Felser C, Nicklas M (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Materials American Physical Society

Book Volume: 4

Article Number: 051401

Journal Issue: 5

DOI: 10.1103/PhysRevMaterials.4.051401

Abstract

We report on the pressure evolution of the giant anomalous Hall effect (AHE) in the chiral antiferromagnet Mn3Ge. The AHE originating from the nonvanishing Berry curvature in Mn3Ge can be continuously tuned by application of hydrostatic pressure. At room temperature, the Hall signal changes sign as a function of pressure and vanishes completely at p=1.53GPa. Even though the Hall conductivity changes sign upon increasing pressure, the room-temperature saturation value of 23ω-1cm-1 at 2.85 GPa is remarkably high and comparable to the saturation value at ambient pressure of about 40ω-1cm-1. The change in the Hall conductivity can be directly linked to a gradual change of the size of the in-plane components of the Mn moments in the noncollinear triangular magnetic structure. Our findings, therefore, provide a route for tuning of the AHE in the chiral antiferromagnetic Mn3Ge.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Centro Nacional de Pesquisa em Energia e Materiais (CNPEM) BR Brazil (BR)

How to cite

APA:

Dos Reis, R.D., Zavareh, M.G., Ajeesh, M.O., Kutelak, L.O., Sukhanov, A.S., Singh, S.,... Nicklas, M. (2020). Pressure tuning of the anomalous Hall effect in the chiral antiferromagnet Mn3Ge. Physical Review Materials, 4(5). https://doi.org/10.1103/PhysRevMaterials.4.051401

MLA:

Dos Reis, R. D., et al. "Pressure tuning of the anomalous Hall effect in the chiral antiferromagnet Mn3Ge." Physical Review Materials 4.5 (2020).

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