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Title: 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:
 [1];  [2]; ORCiD logo [2];  [1]; ORCiD logo [3]
  1. Harvard Univ., Cambridge, MA (United States). Dept. of Applied Physics
  2. National Inst. for Material Science, Tsukuba (Japan)
  3. 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) (SC-22)
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. doi: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. doi:10.1103/PhysRevLett.123.216804.
@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 = {2019},
month = {11}
}

Journal Article:
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