materialscloud:2024.95
Published June 24, 2024 | Version v1
Dataset Open

Doping-Induced Electronic and Structural Phase Transition in the Bulk Weyl semimetal Mo1-xWxTe2

Creators

  • 1. Institut für Physik, Johannes Gutenberg-Universität Mainz, Germany
  • 2. Institute for Experimental and Applied Physics, Christian-Albrechts-Universität Kiel, Germany
  • 3. Institute of Theoretical Physics and Astrophysics, University of Würzburg, D-97074, Germany
  • 4. Peter Grünberg Institut and Institute for Advanced Simulation (PGI-1/IAS-1), Forschungszentrum Jülich and JARA, D-52425 Jülich
  • 5. Surface Concept GmbH, Mainz, Germany
  • 6. Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology, Karlsruhe, Germany
  • 7. Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Kraków, Poland
  • 8. Deutsches Elektronen-Synchrotron, DESY, Hamburg, Germany
  • 9. Department of Physics and Astronomy, Stony Brook University, Stony Brook, USA
  • 10. Deutsches Elektronen-Synchrotron, Center for Free-Electron Laser Science, Hamburg, Germany
  • 11. Institute of Magnetism of the NAS of Ukraine and MES of Ukraine, 03142 Kyiv, Ukraine
  • 12. Ruprecht Haensel Laboratory, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany

* Contact person

Description

A comprehensive study of the electronic and structural phase transition from 1T` to Td in the bulk Weyl semimetal Mo1-xWxTe2 at different doping concentrations has been carried out using time-of-flight momentum microscopy (including circular and linear dichroism), X-ray photoelectron spectroscopy, X-ray photoelectron diffraction, X-ray diffraction (XRD), angle-resolved Raman spectroscopy, transport measurements (including longitudinal elastoresistance), density functional theory (DFT) and Kikuchi pattern calculations. High-resolution, angle-resolved photoemission spectroscopy at 20 K reveals surface electronic states, which are indicative for topological Fermi arcs. Their dispersion agrees with the position of Weyl points predicted by DFT calculations based on the precise crystal structure of our samples obtained from XRD measurements. Raman spectroscopy confirms the inversion symmetry breaking for the Td-phase, which is a necessary condition for the emergence of topological states. Transport measurements show that increasing the doping concentration from 2 to 9 % leads to an increase in the temperature of the phase transition from 1T` to Td from 230 K to 270 K. Magnetoresistance and longitudinal elastoresistance show significantly increased values in the Td-phase. This dataset contains the raw data discussed in the manuscript with the same title.

Files

File preview

All files

Files (216.5 MiB)

Name Apps Size
md5:754fe69f066aa8a66e2e795f2e5c499a
238 Bytes Preview Download
md5:5bd4a8f159602c3847cb3b11497c38c7
216.5 MiB Download
md5:25043f0448b109a31797c5dd98d655ab
748 Bytes Preview Download

References

Preprint (Paper where the data is discussed)
O. Fedchenko, F.K. Diekmann, P. Rüßmann, M. Kallmayer, L. Odenbreit, S.M. Souliou, M. Frachet, A. Winkelmann, M. Merz, D. Vasilyev, D. Kutnyakhov, S. Chernov, C. Schlueter, A. Gloskovskii, T.R.F. Peixoto, M. Hoesch, O. Tkach, Ya. Lytvynenko, M. Le Tacon, Y. Mokrousov, K. Roßnagel, G. Schönhense, H.-J. Elmers, arXiv:2310.10593 (2023), doi: 10.48550/arXiv.2310.10593

Software (Source code of the JuKKR code)
The JuKKR developers, JuDFTteam/JuKKR: v3.6 (v3.6), Zenodo. (2022), doi: 10.5281/zenodo.7284739

Software (Source code for the AiiDA-KKR plugin)
P. Rüßmann, F. Bertoldo, J. Bröder, J. Wasmer, R. Mozumder, J. Chico, and S. Blügel, Zenodo (2021), doi: 10.5281/zenodo.3628251

Journal reference (AiiDA-KKR method paper)
P. Rüßmann, F. Bertoldo, and S. Blügel, The AiiDA-KKR plugin and its application to high-throughput impurity embedding into a topological insulator. npj Comput Mater 7, 13 (2021), doi: 10.1038/s41524-020-00482-5