Details
| Original language | English |
|---|---|
| Pages (from-to) | 500-503 |
| Number of pages | 4 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 34 |
| Issue number | 1-2 |
| Publication status | Published - 1 Aug 2006 |
Abstract
We study the influence of asymmetric tunneling rates of a lateral quantum dot connected to source and drain leads. We use a quantum point contact (QPC) to detect charging events on the dot. Since the mean charge depends on the ratio of the tunneling rates the QPC can be used to detect symmetric configurations where both rates are equal. Thus, the transport properties of the dot can be investigated concerning this symmetry. We concentrate on the visibility of features that correspond to transitions with excited states. We interpret the results with the number of channels used for transport, the electron flow direction and the rate symmetry.
Keywords
- Charge detection, Excited states, Quantum dots, Quantum point contact, Tunneling rates
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 34, No. 1-2, 01.08.2006, p. 500-503.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tuning of tunneling rates in quantum dots using a quantum point contact
AU - Rogge, M. C.
AU - Fricke, C.
AU - Harke, B.
AU - Hohls, F.
AU - Haug, R. J.
AU - Wegscheider, W.
N1 - Funding information: This work was supported by BMBF.
PY - 2006/8/1
Y1 - 2006/8/1
N2 - We study the influence of asymmetric tunneling rates of a lateral quantum dot connected to source and drain leads. We use a quantum point contact (QPC) to detect charging events on the dot. Since the mean charge depends on the ratio of the tunneling rates the QPC can be used to detect symmetric configurations where both rates are equal. Thus, the transport properties of the dot can be investigated concerning this symmetry. We concentrate on the visibility of features that correspond to transitions with excited states. We interpret the results with the number of channels used for transport, the electron flow direction and the rate symmetry.
AB - We study the influence of asymmetric tunneling rates of a lateral quantum dot connected to source and drain leads. We use a quantum point contact (QPC) to detect charging events on the dot. Since the mean charge depends on the ratio of the tunneling rates the QPC can be used to detect symmetric configurations where both rates are equal. Thus, the transport properties of the dot can be investigated concerning this symmetry. We concentrate on the visibility of features that correspond to transitions with excited states. We interpret the results with the number of channels used for transport, the electron flow direction and the rate symmetry.
KW - Charge detection
KW - Excited states
KW - Quantum dots
KW - Quantum point contact
KW - Tunneling rates
UR - http://www.scopus.com/inward/record.url?scp=33746442374&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2006.03.022
DO - 10.1016/j.physe.2006.03.022
M3 - Article
AN - SCOPUS:33746442374
VL - 34
SP - 500
EP - 503
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 1-2
ER -