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

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [1];  [2];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Sejong Univ., Seoul (Korea)

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.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; 2012M3A7B4049888; 2010-0020207; 2013R1A2009131
OSTI ID:
1201284
Alternate ID(s):
OSTI ID: 1198565
Journal Information:
Physical Review Letters, Vol. 115, Issue 1; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

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Cited By (5)

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
Electronic structure and transport properties of bilayer graphene adsorbed by LiF 2 super-halogen clusters and Li 3 O super-alkali clusters journal April 2019

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