Spatial Mapping of Electrostatic Fields in 2D Heterostructures [electronic resource]
Saved in:
| Online Access: |
Full Text (via OSTI) |
|---|---|
| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of High Energy Physics ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2021.
|
| Subjects: |
| Abstract: | In situ electron microscopy is an effective tool for understanding the mechanisms driving novel phenomena in 2D structures. However, due to practical challenges, it is difficult to address these technologically relevant 2D heterostructures with electron microscopy. Here, we use the differential phase contrast (DPC) imaging technique to build a methodology for probing local electrostatic fields during electrical operation with nanoscale spatial resolution in such materials. We find that, by combining a traditional DPC setup with a high-pass filter, we can largely eliminate electric fluctuations emanating from short-range atomic potentials. Using a method based on this filtering algorithm, a priori electric field expectations can be directly compared with experimentally derived values to readily identify inhomogeneities and potentially problematic regions. Furthermore, we use this platform to analyze the electric field and charge density distribution across layers of hBN and MoS<sub>2</sub> |
|---|---|
| Item Description: | Published through Scitech Connect. 08/27/2021. "FERMILAB-PUB-21-594-SQMS." "arXiv:2012.13842." "Journal ID: ISSN 1530-6984." "Other: oai:inspirehep.net:1958390." Murthy, Akshay A. ; Ribet, Stephanie M. ; Stanev, Teodor K. ; Liu, Pufan ; Watanabe, Kenji ; Taniguchi, Takashi ; Stern, Nathaniel P. ; Reis, Roberto dos ; Dravid, Vinayak P. ; |
| Physical Description: | Size: p. 7131-7137 : digital, PDF file. |