Field-Modulated Anomalous Hall Conductivity and Planar Hall Effect in Co3Sn2S2Nanoflakes

Yang SY, Noky J, Gayles J, Dejene FK, Sun Y, Dorr M, Skourski Y, Felser C, Ali MN, Liu E, Parkin SSP (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Nano Letters American Chemical Society

Book Volume: 20

Pages Range: 7860-7867

Journal Issue: 11

DOI: 10.1021/acs.nanolett.0c02219

Abstract

Time-reversal-symmetry-breaking Weyl semimetals (WSMs) have attracted great attention recently because of the interplay between intrinsic magnetism and topologically nontrivial electrons. Here, we present anomalous Hall and planar Hall effect studies on Co3Sn2S2nanoflakes, a magnetic WSM hosting stacked Kagome lattice. The reduced thickness modifies the magnetic properties of the nanoflake, resulting in a 15-Time larger coercive field compared with the bulk, and correspondingly modifies the transport properties. A 22% enhancement of the intrinsic anomalous Hall conductivity (AHC), as compared to bulk material, was observed. A magnetic field-modulated AHC, which may be related to the changing Weyl point separation with magnetic field, was also found. Furthermore, we showed that the PHE in a hard magnetic WSM is a complex interplay between ferromagnetism, orbital magnetoresistance, and chiral anomaly. Our findings pave the way for a further understanding of exotic transport features in the burgeoning field of magnetic topological phases.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Technische Universität Dresden DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE) Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics DE Germany (DE)

How to cite

APA:

Yang, S.-Y., Noky, J., Gayles, J., Dejene, F.K., Sun, Y., Dorr, M.,... Parkin, S.S.P. (2020). Field-Modulated Anomalous Hall Conductivity and Planar Hall Effect in Co3Sn2S2Nanoflakes. Nano Letters, 20(11), 7860-7867. https://doi.org/10.1021/acs.nanolett.0c02219

MLA:

Yang, Shuo-Ying, et al. "Field-Modulated Anomalous Hall Conductivity and Planar Hall Effect in Co3Sn2S2Nanoflakes." Nano Letters 20.11 (2020): 7860-7867.

BibTeX: Download