Dataset for article "Determination of interatomic coupling between two-dimensional crystals using angle-resolved photoemission spectroscopy"

This dataset contains information about the results of angle-resolved photoemission spectroscopy (ARPES) measurements of twisted bilayer graphene as well as theoretical modelling of this experiment. It accompanies a peer reviewed academic publication in which the experiment and theoretical model are described in more detail.

Keywords:
graphene, ARPES
Subjects:
Materials sciences

Cite this dataset as:
Thompson, J., Pei, D., Peng, H., Wang, H., Channa, N., Peng, H., Barinov, A., Schröter, N., Chen, Y., Mucha-Kruczynski, M., 2020. Dataset for article "Determination of interatomic coupling between two-dimensional crystals using angle-resolved photoemission spectroscopy". Bath: University of Bath Research Data Archive. Available from: https://doi.org/10.15125/BATH-00864.

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Data

twisted_trilayer … ARPES.zip
application/zip (53MB)
Creative Commons: Attribution 4.0

Zip archive containing all data used/produced in the paper

Creators

Ding Pei
University of Oxford

Han Peng
University of Oxford

Huan Wang
Peking University

Nikita Channa
University of Bath; University of Warwick

Hailin Peng
Peking University

Alexei Barinov
Elettra Synchrotron

Niels B M Schröter
University of Oxford; Swiss Light Source

Yulin Chen
University of Oxford

Documentation

Data collection method:

The ARPES measurements were performed at the Spectromicroscopy beamline at the Elettra synchrotron (Trieste, Italy). Before measurements, the samples were annealed at 350 °C for 30 minutes. The experiment was then performed at a base pressure of 10^-10 mbar in ultrahigh vacuum and at the temperature of 110 K. We used photons with energy of 74 eV and estimate our energy and angular resolution as 50 meV and 0.5°, respectively. For each sample, we determined the twist angle by measuring the distance between the nearest BZ corners of the two layers. The theoretical graphs and spectra were produced using equations given in the text of the manuscript.

Technical details and requirements:

Experimental ARPES data was transferred to Matlab for further analysis and processing. Theoretical simulations were also performed using Matlab. All the enclosed data is saved in Matlab formats.

Additional information:

The following describes content of the files in the archive (below, "(x)" stands for numerical part of the name of one of the files in the archive; figure numbers refer to figures in the accompanying publication): - Cut_9_64.mat - experimental ARPES map for Fig 2(a). - couplinggraphs.mat - plots in Fig 2(b). - Cut_9_06.mat - experimental ARPES map for Fig 3(a). - Cut_19.mat – experimental ARPES mao for Fig. 3(b). - (x)energyworkspace.mat - calculated ARPES maps for Fig 4 at energy (x). - experimental(x)workspace.mat - experimental data for Fig 4 at energy (x). - Bilayer_19_1.mat – original experimental ARPES data for twisted bilayer graphene in Fig 3 (b); workspace is organised in the same way as “E_contour_(x).mat” described below. - E_contour_(x).mat - original experimental ARPES data for twisted trilayer with twist angle (x); within this file, the structures "SMPM12058_(x)" contain information about photoelectrons with energy (x); the variables "x" and "y" correspond to kx and ky, respectively, and "value" to measured ARPES intensity; also contained within these structure is variable "info" which describes experimental details of the ARPES measurement. - IntensityCutTBLG134 and IntensityCutTBLG096 correspond to the supplementary figure 1, sub-figures (a) and (b) respectively.

Funders

Engineering and Physical Sciences Research Council (EPSRC)
https://doi.org/10.13039/501100000266

Doctoral Training Partnership - University of Bath
EP/M507982/1

China Scholarship Council (CSC)
https://doi.org/10.13039/501100004543

International Research Funding Scheme

IMI Undergraduate Research Experience

Publication details

Publication date: 17 July 2020
by: University of Bath

Version: 1

DOI: https://doi.org/10.15125/BATH-00864

URL for this record: https://researchdata.bath.ac.uk/id/eprint/864

Related articles

Thompson, J. J. P., Pei, D., Peng, H., Wang, H., Channa, N., Peng, H. L., Barinov, A., Schröter, N. B. M., Chen, Y. and Mucha-Kruczyński, M., 2020. Determination of interatomic coupling between two-dimensional crystals using angle-resolved photoemission spectroscopy. Nature Communications, 11(1). Available from: https://doi.org/10.1038/s41467-020-17412-0.

Contact information

Please contact the Research Data Service in the first instance for all matters concerning this item.

Contact person: Marcin Mucha-Kruczynski

Departments:

Faculty of Science
Physics

Research Centres & Institutes
Centre for Nanoscience and Nanotechnology