skip to main content

DOE PAGESDOE PAGES

Title: Helicoidal graphene nanoribbons: Chiraltronics

Here, we present a calculation of the effective geometry-induced quantum potential for the carriers in graphene shaped as a helicoidal nanoribbon. In this geometry the twist of the nanoribbon plays the role of an effective transverse electric field in graphene and this is reminiscent of the Hall effect. But, this effective electric field has a different sign for the two isospin states and translates into a mechanism to separate the two chiral species on the opposing rims of the nanoribbon. Finally, isospin transitions are expected with the emission or absorption of microwave radiation which could be adjusted to be in the THz region.
Authors:
 [1] ; ORCiD logo [2]
  1. Sofia Univ. (Bulgaria). Dept. of Condensed Matter Physics
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-15-22193
Journal ID: ISSN 1098-0121; PRBMDO; TRN: US1800616
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 3; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science
OSTI Identifier:
1414081
Alternate Identifier(s):
OSTI ID: 1204693

Atanasov, Victor, and Saxena, Avadh. Helicoidal graphene nanoribbons: Chiraltronics. United States: N. p., Web. doi:10.1103/PhysRevB.92.035440.
Atanasov, Victor, & Saxena, Avadh. Helicoidal graphene nanoribbons: Chiraltronics. United States. doi:10.1103/PhysRevB.92.035440.
Atanasov, Victor, and Saxena, Avadh. 2015. "Helicoidal graphene nanoribbons: Chiraltronics". United States. doi:10.1103/PhysRevB.92.035440. https://www.osti.gov/servlets/purl/1414081.
@article{osti_1414081,
title = {Helicoidal graphene nanoribbons: Chiraltronics},
author = {Atanasov, Victor and Saxena, Avadh},
abstractNote = {Here, we present a calculation of the effective geometry-induced quantum potential for the carriers in graphene shaped as a helicoidal nanoribbon. In this geometry the twist of the nanoribbon plays the role of an effective transverse electric field in graphene and this is reminiscent of the Hall effect. But, this effective electric field has a different sign for the two isospin states and translates into a mechanism to separate the two chiral species on the opposing rims of the nanoribbon. Finally, isospin transitions are expected with the emission or absorption of microwave radiation which could be adjusted to be in the THz region.},
doi = {10.1103/PhysRevB.92.035440},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 3,
volume = 92,
place = {United States},
year = {2015},
month = {7}
}

Works referenced in this record:

Two-dimensional gas of massless Dirac fermions in graphene
journal, November 2005
  • Novoselov, K. S.; Geim, A. K.; Morozov, S. V.
  • Nature, Vol. 438, Issue 7065, p. 197-200
  • DOI: 10.1038/nature04233