Details
| Original language | English |
|---|---|
| Pages (from-to) | 477-481 |
| Number of pages | 5 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 26 |
| Issue number | 1-4 |
| Publication status | Published - 25 Nov 2004 |
| Event | International Conference on Quantum Dots - Banff, Alberta, Canada Duration: 10 May 2004 → 13 May 2004 |
Abstract
We have analyzed a single-electron transport spectrum of a quantum dot formed in a GaAs/AlGaAs resonant tunneling device. The measured spectrum indicates a strong confining potential and the lack of circular symmetry. We model the quantum dot by applying a rounded parabolic potential and a negatively charged impurity, shifted laterally and vertically from the center of the dot. We analyze the physical conditions behind the optimized parameter values and consider also the structural properties of the corresponding single-electron states as a function of the magnetic field.
Keywords
- Electron transport, Quantum dots, Single-electron spectrum
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. 26, No. 1-4, 25.11.2004, p. 477-481.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Characterization of deformed quantum dots by modeling single-electron- tunneling experiments
AU - Räsänen, E.
AU - Könemann, J.
AU - Haug, R. J.
AU - Puska, M. J.
AU - Nieminen, R. M.
PY - 2004/11/25
Y1 - 2004/11/25
N2 - We have analyzed a single-electron transport spectrum of a quantum dot formed in a GaAs/AlGaAs resonant tunneling device. The measured spectrum indicates a strong confining potential and the lack of circular symmetry. We model the quantum dot by applying a rounded parabolic potential and a negatively charged impurity, shifted laterally and vertically from the center of the dot. We analyze the physical conditions behind the optimized parameter values and consider also the structural properties of the corresponding single-electron states as a function of the magnetic field.
AB - We have analyzed a single-electron transport spectrum of a quantum dot formed in a GaAs/AlGaAs resonant tunneling device. The measured spectrum indicates a strong confining potential and the lack of circular symmetry. We model the quantum dot by applying a rounded parabolic potential and a negatively charged impurity, shifted laterally and vertically from the center of the dot. We analyze the physical conditions behind the optimized parameter values and consider also the structural properties of the corresponding single-electron states as a function of the magnetic field.
KW - Electron transport
KW - Quantum dots
KW - Single-electron spectrum
UR - http://www.scopus.com/inward/record.url?scp=13444259626&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2004.08.086
DO - 10.1016/j.physe.2004.08.086
M3 - Conference article
AN - SCOPUS:13444259626
VL - 26
SP - 477
EP - 481
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 1-4
T2 - International Conference on Quantum Dots
Y2 - 10 May 2004 through 13 May 2004
ER -