Guiding Dirac Fermions in Graphene with a Carbon Nanotube
Abstract
Relativistic massless charged particles in a two-dimensional conductor can be guided by a onedimensional electrostatic potential, in an analogous manner to light guided by an optical fiber. We use a carbon nanotube to generate such a guiding potential in graphene and create a single mode electronic waveguide. The nanotube and graphene are separated by a few nanometers and can be controlled and measured independently. As we charge the nanotube, we observe the formation of a single guided mode in graphene that we detect using the same nanotube as a probe. Finally, this single electronic guided mode in graphene is sufficiently isolated from other electronic states of linear Dirac spectrum continuum, allowing the transmission of information with minimal distortion.
- Authors:
-
[2];
[3]
- Harvard Univ., Cambridge, MA (United States). Dept. of Applied Physics
- National Inst. for Material Science, Tsukuba (Japan)
- Centre National de la Recherche Scientifique (CNRS), Palaiseau (France)
- Publication Date:
- Research Org.:
- Harvard Univ., Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1575128
- Grant/Contract Number:
- SC0012260
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 123; Journal Issue: 21; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Cheng, Austin, Taniguchi, Takashi, Watanabe, Kenji, Kim, Philip, and Pillet, Jean-Damien. Guiding Dirac Fermions in Graphene with a Carbon Nanotube. United States: N. p., 2019.
Web. doi:10.1103/PhysRevLett.123.216804.
Cheng, Austin, Taniguchi, Takashi, Watanabe, Kenji, Kim, Philip, & Pillet, Jean-Damien. Guiding Dirac Fermions in Graphene with a Carbon Nanotube. United States. https://doi.org/10.1103/PhysRevLett.123.216804
Cheng, Austin, Taniguchi, Takashi, Watanabe, Kenji, Kim, Philip, and Pillet, Jean-Damien. Fri .
"Guiding Dirac Fermions in Graphene with a Carbon Nanotube". United States. https://doi.org/10.1103/PhysRevLett.123.216804. https://www.osti.gov/servlets/purl/1575128.
@article{osti_1575128,
title = {Guiding Dirac Fermions in Graphene with a Carbon Nanotube},
author = {Cheng, Austin and Taniguchi, Takashi and Watanabe, Kenji and Kim, Philip and Pillet, Jean-Damien},
abstractNote = {Relativistic massless charged particles in a two-dimensional conductor can be guided by a onedimensional electrostatic potential, in an analogous manner to light guided by an optical fiber. We use a carbon nanotube to generate such a guiding potential in graphene and create a single mode electronic waveguide. The nanotube and graphene are separated by a few nanometers and can be controlled and measured independently. As we charge the nanotube, we observe the formation of a single guided mode in graphene that we detect using the same nanotube as a probe. Finally, this single electronic guided mode in graphene is sufficiently isolated from other electronic states of linear Dirac spectrum continuum, allowing the transmission of information with minimal distortion.},
doi = {10.1103/PhysRevLett.123.216804},
journal = {Physical Review Letters},
number = 21,
volume = 123,
place = {United States},
year = {Fri Nov 22 00:00:00 EST 2019},
month = {Fri Nov 22 00:00:00 EST 2019}
}
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