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Title: Electronic properties of bilayer graphenes strongly coupled to interlayer stacking and an external field

Abstract

Bilayer graphene (BLG) with a tunable band gap appears interesting as an alternative to graphene for practical applications; thus, its transport properties are being actively pursued. Using density functional theory and perturbation analysis, we investigated, under an external electric field, the electronic properties of BLG in various stackings relevant to recently observed complex structures. We established the first phase diagram summarizing the stacking-dependent gap openings of BLG for a given field. Lastly, we further identified high-density midgap states, localized on grain boundaries, even under a strong field, which can considerably reduce the overall transport gap.

Authors:
 [1];  [2];  [2];  [1];  [2];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Sejong Univ., Seoul (Korea)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1201284
Alternate Identifier(s):
OSTI ID: 1198565
Grant/Contract Number:  
AC05-00OR22725; 2012M3A7B4049888; 2010-0020207; 2013R1A2009131
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 115; Journal Issue: 1; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Park, Changwon, Ryou, Junga, Hong, Suklyun, Sumpter, Bobby G., Kim, Gunn, and Yoon, Mina. Electronic properties of bilayer graphenes strongly coupled to interlayer stacking and an external field. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.115.015502.
Park, Changwon, Ryou, Junga, Hong, Suklyun, Sumpter, Bobby G., Kim, Gunn, & Yoon, Mina. Electronic properties of bilayer graphenes strongly coupled to interlayer stacking and an external field. United States. https://doi.org/10.1103/PhysRevLett.115.015502
Park, Changwon, Ryou, Junga, Hong, Suklyun, Sumpter, Bobby G., Kim, Gunn, and Yoon, Mina. 2015. "Electronic properties of bilayer graphenes strongly coupled to interlayer stacking and an external field". United States. https://doi.org/10.1103/PhysRevLett.115.015502. https://www.osti.gov/servlets/purl/1201284.
@article{osti_1201284,
title = {Electronic properties of bilayer graphenes strongly coupled to interlayer stacking and an external field},
author = {Park, Changwon and Ryou, Junga and Hong, Suklyun and Sumpter, Bobby G. and Kim, Gunn and Yoon, Mina},
abstractNote = {Bilayer graphene (BLG) with a tunable band gap appears interesting as an alternative to graphene for practical applications; thus, its transport properties are being actively pursued. Using density functional theory and perturbation analysis, we investigated, under an external electric field, the electronic properties of BLG in various stackings relevant to recently observed complex structures. We established the first phase diagram summarizing the stacking-dependent gap openings of BLG for a given field. Lastly, we further identified high-density midgap states, localized on grain boundaries, even under a strong field, which can considerably reduce the overall transport gap.},
doi = {10.1103/PhysRevLett.115.015502},
url = {https://www.osti.gov/biblio/1201284}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 1,
volume = 115,
place = {United States},
year = {Thu Jul 02 00:00:00 EDT 2015},
month = {Thu Jul 02 00:00:00 EDT 2015}
}

Journal Article:

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Cited by: 40 works
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Works referencing / citing this record:

Landau quantization of Dirac fermions in graphene and its multilayers
journal, April 2017


Superconductivity in bilayer graphene intercalated with alkali and alkaline earth metals
journal, January 2019


First-principles study of the structural and electronic properties of graphene/MoS 2 interfaces
journal, September 2017


From thermoelectricity to phonoelectricity
journal, June 2019