Yang Xu^1*, Lakshmi Das², Junzhang Ma³, Changjiang Yi⁴, Simin Nie⁵, Youguo Shi⁴, Apoorv Tiwari², Stepan Tsirkin², Titus Neupert², Maria Medarde⁶, Ming Shi⁷, Johan Chang², Tian Shang¹

1 Key Laboratory of Polar Materials and Devices (MOE), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China

2 Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland

3 Department of Physics, City University of Hong Kong, Kowloon, Hong Kong

4 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

5 Department of Materials Science and Engineering, Stanford University, Stanford, California 94035, USA

6 Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

7 Swiss Light Source, Paul Scherrer Institut, Villigen CH-5232, Switzerland

* Corresponding authors emails: xuyangfudan@126.com

DOI10.24435/materialscloud:4f-n7 [version v1]

Publication date: Dec 02, 2021

How to cite this record

Yang Xu, Lakshmi Das, Junzhang Ma, Changjiang Yi, Simin Nie, Youguo Shi, Apoorv Tiwari, Stepan Tsirkin, Titus Neupert, Maria Medarde, Ming Shi, Johan Chang, Tian Shang, Unconventional transverse transport above and below the magnetic transition temperature in Weyl semimetal EuCd₂As₂, Materials Cloud Archive 2021.206 (2021), https://doi.org/10.24435/materialscloud:4f-n7

Description

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)].

Materials Cloud sections using this data

Files

File name	Size	Description
Data-EuCd2As2.zip MD5md5:43245da89b626c4eaa1e9b5d500ba360	12.5 MiB	This record contains the raw data for this manuscript [Physical Review Letters 126, 076602 (2021)]. As magnetic, electrical, and thermoelectrical measurements have been performed, the data files are also divided into these three categories in the .zip file. All data were generated from a Quantum Design magnetic property measurement system (MPMS) and a physical property measurement system (PPMS).
README.txt MD5md5:c752d068190751fd22e123623d3d71ad	398 Bytes	Readme file

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External references

Keywords

anomalous Hall effect anomalous Nernst effect magnetic Weyl semimetal topological spin texture MARVEL/DD6 Experimental