Functionalizing graphene was recently shown to have a dramatic effect on the electronic properties of this material. Here we investigate spatial ordering of adatoms driven by the RKKY-type interactions. In the ordered state, which arises via a Peierls-instability-type mechanism, the adatoms reside mainly on one of the two graphene sublattices. Bragg scattering of electron waves induced by sublattice symmetry breaking results in a band gap opening, whereby Dirac fermions acquire a finite mass. The band gap is found to be immune to the adatoms' positional disorder, with only an exponentially small number of localized states residing in the gap. The gapped state is stabilized in a wide range of electron doping. Our findings show that controlled adsorption of adatoms or molecules provides a route to engineering a tunable band gap in graphene.
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Bolotin, K. I.
;
Sikes, K. J.
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Columbia Univ, Dept Appl Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Sikes, K. J.
;
Jiang, Z.
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h-index: 0
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USA
Natl High Magnet Field Lab, Tallahassee, FL 32310 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Jiang, Z.
;
Klima, M.
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Columbia Univ, Dept Mech Engn, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Klima, M.
;
Fudenberg, G.
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Columbia Univ, Dept Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Fudenberg, G.
;
Hone, J.
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h-index: 0
机构:
Columbia Univ, Dept Mech Engn, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Hone, J.
;
Kim, P.
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Columbia Univ, Dept Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Kim, P.
;
Stormer, H. L.
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h-index: 0
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USA
Columbia Univ, Dept Appl Phys, New York, NY 10027 USA
Alcatel Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
机构:
Univ Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Chen, Jian-Hao
;
Jang, Chaun
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机构:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Jang, Chaun
;
Xiao, Shudong
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机构:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Xiao, Shudong
;
Ishigami, Masa
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Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Ishigami, Masa
;
Fuhrer, Michael S.
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Univ Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Bolotin, K. I.
;
Sikes, K. J.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Appl Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Sikes, K. J.
;
Jiang, Z.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USA
Natl High Magnet Field Lab, Tallahassee, FL 32310 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Jiang, Z.
;
Klima, M.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Mech Engn, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Klima, M.
;
Fudenberg, G.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Fudenberg, G.
;
Hone, J.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Mech Engn, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Hone, J.
;
Kim, P.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
Kim, P.
;
Stormer, H. L.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Phys, New York, NY 10027 USA
Columbia Univ, Dept Appl Phys, New York, NY 10027 USA
Alcatel Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USAColumbia Univ, Dept Phys, New York, NY 10027 USA
机构:
Univ Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Chen, Jian-Hao
;
Jang, Chaun
论文数: 0引用数: 0
h-index: 0
机构:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Jang, Chaun
;
Xiao, Shudong
论文数: 0引用数: 0
h-index: 0
机构:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Xiao, Shudong
;
Ishigami, Masa
论文数: 0引用数: 0
h-index: 0
机构:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Ishigami, Masa
;
Fuhrer, Michael S.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USAUniv Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA