Details
| Original language | English |
|---|---|
| Article number | 193302 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 72 |
| Issue number | 19 |
| Publication status | Published - 15 Nov 2005 |
Abstract
We demonstrate electron redistribution caused by magnetic field on a single quantum dot measured by means of a quantum point contact as noninvasive detector. Our device, which is fabricated by local anodic oxidation, allows us to control independently the quantum point contact and all tunneling barriers of the quantum dot. Thus we are able to measure both the change of the quantum dot charge and also changes of the electron configuration at constant number of electrons on the quantum dot. We use these features to exploit the quantum dot in a high magnetic field where transport through the quantum dot displays the effects of Landau shells and spin blockade. We confirm the internal rearrangement of electrons as function of the magnetic field for a fixed number of electrons on the quantum dot.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B - Condensed Matter and Materials Physics, Vol. 72, No. 19, 193302, 15.11.2005.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Noninvasive detection of charge rearrangement in a quantum dot in high magnetic fields
AU - Fricke, C.
AU - Rogge, M. C.
AU - Harke, B.
AU - Reinwald, M.
AU - Wegscheider, W.
AU - Hohls, F.
AU - Haug, R. J.
PY - 2005/11/15
Y1 - 2005/11/15
N2 - We demonstrate electron redistribution caused by magnetic field on a single quantum dot measured by means of a quantum point contact as noninvasive detector. Our device, which is fabricated by local anodic oxidation, allows us to control independently the quantum point contact and all tunneling barriers of the quantum dot. Thus we are able to measure both the change of the quantum dot charge and also changes of the electron configuration at constant number of electrons on the quantum dot. We use these features to exploit the quantum dot in a high magnetic field where transport through the quantum dot displays the effects of Landau shells and spin blockade. We confirm the internal rearrangement of electrons as function of the magnetic field for a fixed number of electrons on the quantum dot.
AB - We demonstrate electron redistribution caused by magnetic field on a single quantum dot measured by means of a quantum point contact as noninvasive detector. Our device, which is fabricated by local anodic oxidation, allows us to control independently the quantum point contact and all tunneling barriers of the quantum dot. Thus we are able to measure both the change of the quantum dot charge and also changes of the electron configuration at constant number of electrons on the quantum dot. We use these features to exploit the quantum dot in a high magnetic field where transport through the quantum dot displays the effects of Landau shells and spin blockade. We confirm the internal rearrangement of electrons as function of the magnetic field for a fixed number of electrons on the quantum dot.
UR - http://www.scopus.com/inward/record.url?scp=29744454497&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.72.193302
DO - 10.1103/PhysRevB.72.193302
M3 - Article
AN - SCOPUS:29744454497
VL - 72
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 19
M1 - 193302
ER -