Unconventional transverse transport above and below the magnetic transition temperature in Weyl semimetal EuCd₂As₂

DOI

As exemplified by the growing interest in the quantum anomalous Hall effect, the research on topology as an organizing principle of quantum matter is greatly enriched from the interplay with magnetism. In this vein, we present a combined electrical and thermoelectrical transport study on the magnetic Weyl semimetal EuCd₂As₂. Unconventional contribution to the anomalous Hall and anomalous Nernst effects were observed both above and below the magnetic transition temperature of EuCd₂As₂, indicating the existence of significant Berry curvature. EuCd₂As₂ represents a rare case in which this unconventional transverse transport emerges both above and below the magnetic transition temperature in the same material. The transport properties evolve with temperature and field in the antiferromagnetic phase in a different manner than in the paramagnetic phase, suggesting different mechanisms to their origin. Our results indicate EuCd₂As₂ is a fertile playground for investigating the interplay between magnetism and topology, and potentially a plethora of topologically nontrivial phases rooted in this interplay. This record contains the raw data for this manuscript [Physical Review Letters 126, 076602 (2021)].

Identifier
DOI https://doi.org/10.24435/materialscloud:4f-n7
Related Identifier https://doi.org/10.1103/PhysRevLett.126.076602
Related Identifier https://archive.materialscloud.org/communities/mcarchive
Related Identifier https://doi.org/10.24435/materialscloud:xr-qq
Metadata Access https://archive.materialscloud.org/oai2d?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:materialscloud.org:1130
Provenance
Creator Xu, Yang; Das, Lakshmi; Ma, Junzhang; Yi, Changjiang; Nie, Simin; Shi, Youguo; Tiwari, Apoorv; Tsirkin, Stepan; Neupert, Titus; Medarde, Maria; Shi, Ming; Chang, Johan; Shang, Tian
Publisher Materials Cloud
Contributor Xu, Yang
Publication Year 2021
Rights info:eu-repo/semantics/openAccess; Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/legalcode
OpenAccess true
Contact archive(at)materialscloud.org
Representation
Language English
Resource Type info:eu-repo/semantics/other
Format application/zip; text/plain; text/markdown
Discipline Materials Science and Engineering