Details
| Original language | English |
|---|---|
| Article number | 203114 |
| Journal | Applied physics letters |
| Volume | 100 |
| Issue number | 20 |
| Publication status | Published - 14 May 2012 |
Abstract
Aharonov-Bohm oscillations are observed in a graphene quantum ring with a topgate covering one arm of the ring. As graphene is a gapless semiconductor, this geometry allows to study not only the quantum interference of electrons with electrons or holes with holes, but also the unique situation of quantum interference between electrons and holes. The period and amplitude of the observed Aharonov-Bohm oscillations are independent of the sign of the applied gate voltage showing the equivalence between unipolar and dipolar interferences.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Applied physics letters, Vol. 100, No. 20, 203114, 14.05.2012.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Aharonov-Bohm effect in an electron-hole graphene ring system
AU - Smirnov, D.
AU - Schmidt, H.
AU - Haug, R. J.
N1 - Funding information: We acknowledge discussions with P. Recher. This work was supported by the DFG via SPP 1459, the excellence cluster QUEST, and the NTH School for Contacts in Nanosystems.
PY - 2012/5/14
Y1 - 2012/5/14
N2 - Aharonov-Bohm oscillations are observed in a graphene quantum ring with a topgate covering one arm of the ring. As graphene is a gapless semiconductor, this geometry allows to study not only the quantum interference of electrons with electrons or holes with holes, but also the unique situation of quantum interference between electrons and holes. The period and amplitude of the observed Aharonov-Bohm oscillations are independent of the sign of the applied gate voltage showing the equivalence between unipolar and dipolar interferences.
AB - Aharonov-Bohm oscillations are observed in a graphene quantum ring with a topgate covering one arm of the ring. As graphene is a gapless semiconductor, this geometry allows to study not only the quantum interference of electrons with electrons or holes with holes, but also the unique situation of quantum interference between electrons and holes. The period and amplitude of the observed Aharonov-Bohm oscillations are independent of the sign of the applied gate voltage showing the equivalence between unipolar and dipolar interferences.
UR - http://www.scopus.com/inward/record.url?scp=84861832035&partnerID=8YFLogxK
U2 - 10.1063/1.4717622
DO - 10.1063/1.4717622
M3 - Article
AN - SCOPUS:84861832035
VL - 100
JO - Applied physics letters
JF - Applied physics letters
SN - 0003-6951
IS - 20
M1 - 203114
ER -