期刊
APPLIED PHYSICS LETTERS
卷 97, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3525858
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- JSPS
- LPS
- NSA
- ARO
- AFOSR
- DARPA
- NSF [0726909]
- JSPS-RFBR [09-02-92114]
- MEXT
An electrostatic quantum dot cannot be formed in monolayer graphene because of the Klein tunneling. However, a dot can be formed with the help of a uniform magnetic field. As shown here, a spatial modulation of the Dirac gap leads to confined states with discrete energy levels, thus defining a dot, without applying external electric and magnetic fields. Gap-induced dot states can coexist and couple with states introduced by an electrostatic potential. This property allows the region in which the resulting states are localized to be tuned with the potential. (C) 2010 American Institute of Physics. [doi:10.1063/1.3525858]
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