Submitted for publication in J. Vac. Sci. Technol. A
Acquisition and Analysis of Scanning Tunneling Spectroscopy Data — WSe2 Monolayer
Randall M. Feenstra1, Grayson R. Frazier1, Yi Pan2,3, Stefan Fölsch2, Yu-Chuan Lin4, Bhakti Jariwala4, Kehao Zhang4, and Joshua A. Robinson4
1Dept. Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
2Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany
3Center for Spintronics and Quantum Systems, State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China
4Department of Materials Science and Engineering, and Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA 16802, USA
Abstract
Acquisition and analysis is described for scanning tunneling spectroscopy data acquired from a monolayer of WSe2 grown on epitaxial graphene on SiC. Curve fitting of the data is performed, in order to deduce band-edge energies. In addition to describing the details of the theoretical curves used for the fitting, the acquisition and analysis methods are also discussed within the larger context of the historical development of scanning tunneling spectroscopy techniques.
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