Graphene transistor based on tunable Dirac fermion optics
Abstract
We report an electrically tunable graphene quantum switch based on Dirac fermion optics (DFO), with electrostatically defined analogies of mirror and collimators utilizing angle-dependent Klein tunneling. The device design allows a previously unreported quantitative characterization of the net DFO contribution and leads to improved device performance resilient to abrupt change in temperature, bias, doping, and electrostatic environment. The electrically tunable collimator and reflector demonstrated in this work, and the capability of accurate in situ characterization of their performance, provide the building blocks toward more complicated functional quantum device architecture such as highly integrated electron-optical circuits.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 15, 2019
- Source ID
- 10.1073/pnas.1816119116
Entities
People
- Avik W. Ghosh
- Gil-Ho Lee
- James C. Hone
- K. M. Masum Habib
- Ke Wang
- Kenji Watanabe
- Lei Wang
- Mirza M. Elahi
- Philip Kim
- Takashi Taniguchi
Organizations
- Columbia University
- Core Research for Evolutional Science and Technology
- Harvard University
- National Institute for Materials Science
- National Research Foundation of Korea
- Office of Naval Research
- Pohang University of Science and Technology
- Semiconductor Research Corporation
- University of Minnesota
- University of Virginia