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Emergence of nontrivial low-energy Dirac fermions in antiferromagnetic EuCd2As2

Junzhang Ma1*, Han Wang2, Simin Nie3, Changjiang Yi4, Yuanfeng Xu4, Hang Li4, Jasmin Jandke1, Wulf Wulfhekel5, Yaobo Huang6, Damien West2, Pierre Richard7, Alla Chikina1, Vladimir Strocov1, Joël Mesot1,8, Hongming Weng4,9, Shengbai Zhang2, Youguo Shi4,9, Tian Qian4,9, Hong Ding4,9,10, Ming Shi1

1 Paul Scherrer Institute, Swiss Light Source, CH-5232 Villigen, PSI, Switzerland

2 Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180, USA

3 Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA

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

5 Physikalisches Institut, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

6 Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China

7 Institut quantique, Université de Sherbrooke, 2500 boulevard de l’Université, Sherbrooke, Québec J1K 2R1, Canada

8 Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

9 Songshan Lake Materials Laboratory Dongguan, Guangdong 523808, China

10 School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China

* Corresponding authors emails: junzhang.ma@psi.ch
DOI10.24435/materialscloud:3r-86 [version v1]

Publication date: Jan 02, 2021

How to cite this record

Junzhang Ma, Han Wang, Simin Nie, Changjiang Yi, Yuanfeng Xu, Hang Li, Jasmin Jandke, Wulf Wulfhekel, Yaobo Huang, Damien West, Pierre Richard, Alla Chikina, Vladimir Strocov, Joël Mesot, Hongming Weng, Shengbai Zhang, Youguo Shi, Tian Qian, Hong Ding, Ming Shi, Emergence of nontrivial low-energy Dirac fermions in antiferromagnetic EuCd2As2, Materials Cloud Archive 2021.1 (2021), doi: 10.24435/materialscloud:3r-86.

Description

When magnetism meets topology, colorful novel states can be created in materials. The realization of magnetic topological Dirac materials remains a major issue in topological physics studies. In this work, it is ascertained that the topologically nontrivial ground state of EuCd2As2 is a good candidate for different types of magnetic topological state: magnetic topological Dirac semimetal, axion insulator, antiferromagnetic TCI, and higher order topological insulator. This documents include all the raw data in the reference Advanced Materials 32, 1907565 (2020). This files contains all the raw data that published in the related paper. Fig.1.zip includes dat format transport measurement results which can be open by Origin. Fig.2.zip contains ibw format ARPES spectra which can be opened by IGOR. Fig.3.zip contains figures of the calculated FS, band structure. The dat format files can be open by IGOR. Fig.4.zip contains both ARPES spectra and STS data. sxm format file can be opened by SXM software which is commonly used for STM/STS data. The h5 format file can be opened by IGOR. H5 format is also commonly used for high dimensional data in ARPES experiments. Fig.5 is mainly the calculated band structure of the related fig.5. The itx format can be opened by IGOR. All the ibw format files are duplicated in the txt file with same name. The SXM file is also duplicated in txt file with same name.

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Files

File name Size Description
FIg1.zip
MD5md5:2079e4f3faae8dbf4077ec94574268a2
384.7 KiB Fig1.zip includes dat format transport measurement results which can be open by Origin.
Fig2.zip
MD5md5:9828534af76e100d35b9eb8480859a4d
4.7 MiB Fig.2.zip contains ibw format ARPES spectra which can be opened by IGOR.
Fig3.zip
MD5md5:968d37404ce6195ae9c69d424f6cab14
15.0 MiB Fig.3.zip contains figures of the calculated FS, band structure. The dat format files can be open by IGOR.
Fig4.zip
MD5md5:02e8cb2050ef4c336f51ef1abf5c37cc
80.5 MiB Fig.4.zip contains both ARPES spectra and STS data. sxm format file can be opened by SXM software which is commonly used for STM/STS data. The h5 format file can be opened by IGOR. H5 format is also commonly used for high dimensional data in ARPES experiments.
Fig5.zip
MD5md5:ead604622474a8ff3732a43a31990744
4.4 MiB Fig.5 is mainly the calculated band structure of the related fig.5. The itx format can be opened by IGOR.

License

Files and data are licensed under the terms of the following license: Creative Commons Attribution 4.0 International.
Metadata, except for email addresses, are licensed under the Creative Commons Attribution Share-Alike 4.0 International license.

Keywords

Magnetic topological Dirac semimetal Axion insulator Magnetic topological insulator High order topological insulator MARVEL SNSF

Version history:

2021.1 (version v1) [This version] Jan 02, 2021 DOI10.24435/materialscloud:3r-86