Details
| Original language | English |
|---|---|
| Pages (from-to) | 1760-1762 |
| Number of pages | 3 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 40 |
| Issue number | 5 |
| Publication status | Published - 1 Mar 2008 |
Abstract
The high frequency conductance G of a quantum point contact was studied for f ≤ 300 MHz. While the real part R (G) remains unchanged by frequency we observe a stepwise change of the imaginary part I (G) when adding additional conductance channels. The step height Δ I (G) is linear in frequency with a positive slope and thus has capacitive character with a Δ C per channel of a few fF.
Keywords
- High frequency conductance, Quantum point contact
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. 40, No. 5, 01.03.2008, p. 1760-1762.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Admittance of a quantum point contact
AU - Hohls, Frank
AU - Fricke, Christian
AU - Haug, Rolf J.
PY - 2008/3/1
Y1 - 2008/3/1
N2 - The high frequency conductance G of a quantum point contact was studied for f ≤ 300 MHz. While the real part R (G) remains unchanged by frequency we observe a stepwise change of the imaginary part I (G) when adding additional conductance channels. The step height Δ I (G) is linear in frequency with a positive slope and thus has capacitive character with a Δ C per channel of a few fF.
AB - The high frequency conductance G of a quantum point contact was studied for f ≤ 300 MHz. While the real part R (G) remains unchanged by frequency we observe a stepwise change of the imaginary part I (G) when adding additional conductance channels. The step height Δ I (G) is linear in frequency with a positive slope and thus has capacitive character with a Δ C per channel of a few fF.
KW - High frequency conductance
KW - Quantum point contact
UR - http://www.scopus.com/inward/record.url?scp=39649085346&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2007.11.021
DO - 10.1016/j.physe.2007.11.021
M3 - Article
AN - SCOPUS:39649085346
VL - 40
SP - 1760
EP - 1762
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 5
ER -