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Persistence of a surface state arc in the topologically trivial phase of MoTe2

Alberto Crepaldi1*, Gabriel Autès1,2, Andrea Sterzi3, Giulia Manzoni3, Michele Zacchigna4, Federico Cilento5, Ivana Vobornik4, Jun Fujii4, Philippe Bugnon1, Arnaud Magrez1, Helmuth Berger1, Fulvio Parmigiani3,5,6, Oleg V. Yazyev1,2, Marco Grioni1

1 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

2 National Centre for Computational Design and Discovery of Novel Materials MARVEL, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

3 Università degli Studi di Trieste, Via A. Valerio 2, I-34127 Trieste, Italy

4 C.N.R.–I.O.M., Strada Statale 14, km 163.5, Trieste 34149, Italy

5 Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14, km 163.5, Trieste, Italy

6 International Faculty, University of Köln, D-50937 Köln, Germany

* Corresponding authors emails: alberto.crepaldi@epfl.ch
DOI10.24435/materialscloud:1m-6f [version v1]

Publication date: Apr 09, 2021

How to cite this record

Alberto Crepaldi, Gabriel Autès, Andrea Sterzi, Giulia Manzoni, Michele Zacchigna, Federico Cilento, Ivana Vobornik, Jun Fujii, Philippe Bugnon, Arnaud Magrez, Helmuth Berger, Fulvio Parmigiani, Oleg V. Yazyev, Marco Grioni, Persistence of a surface state arc in the topologically trivial phase of MoTe2, Materials Cloud Archive 2021.58 (2021), doi: 10.24435/materialscloud:1m-6f.

Description

This record contains the experimental band structure of MoTe2. The material exhibits a structural phase transition at approximately 240 K, and in the low-temperature 1T’ phase is expected to realize the type-II Weyl semimetal phase. In our data we compare the band structure and the Fermi surface in the topological and in the trivial (1T’’) phase. We report the existence of large surface arc, which is persistent across the topological phase transition, and we conclude that its observation cannot be taken alone as a smoking gun of the Weyl semimetal phase. The study is completed by a spin-resolved ARPES study of the bulk electronic properties in the low-temperature topological phase

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Files

File name Size Description
Data.zip
MD5md5:295465f869ed799f4e16663830165de1
17.7 MiB Compressed folder containing the data, divided in folders according to the Figure panels as described in the README file.
README.txt
MD5md5:552e355f1fc92436c9dfdb4c1ae5adcb
1.1 KiB Information about how the data have been exported in .txt and how to fully reconstruct the raw data.

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

Electronic bands Spin properties Type-II Weyl semimetal Topological phase transition Experimental SNSF MARVEL ERC

Version history:

2021.58 (version v1) [This version] Apr 09, 2021 DOI10.24435/materialscloud:1m-6f