Details
| Original language | English |
|---|---|
| Pages (from-to) | 442-445 |
| Number of pages | 4 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 32 |
| Issue number | 1-2 SPEC. ISS. |
| Publication status | Published - 1 May 2006 |
Abstract
Results of combined experimental and theoretical studies of transport spectra of a quantum dot in a magnetic field are reported. In the linear regime, the observed oscillatory behavior of the conductance peaks with varying magnetic field is interpreted in terms of successive rearrangements in the electronic ground state configurations of Fock-Darwin energy levels. Spin-blockade related bimodal behavior is also observed in the peak intensities due to spin dependent tunneling. In the nonlinear regime, a regular pattern of negative differential conductance is detected. This is compared with different theoretical cases demonstrating a subtle interplay between spin dependent tunneling and source and drain resistance asymmetries.
Keywords
- Coulomb blockade, Fock-Darwin spectrum, Negative differential conductance, Quantum dot transport, Spin blockade
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. 32, No. 1-2 SPEC. ISS., 01.05.2006, p. 442-445.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Spin and negative differential conductance in the transport through a quantum dot in a magnetic field
AU - Rogge, M. C.
AU - Cavaliere, F.
AU - Sassetti, M.
AU - Haug, R. J.
AU - Kramer, B.
N1 - Funding information: Financial support by the German BMBF, the EU (HPRN-CT2000-0144, MCRTN-CT2003-504574) is acknowledged.
PY - 2006/5/1
Y1 - 2006/5/1
N2 - Results of combined experimental and theoretical studies of transport spectra of a quantum dot in a magnetic field are reported. In the linear regime, the observed oscillatory behavior of the conductance peaks with varying magnetic field is interpreted in terms of successive rearrangements in the electronic ground state configurations of Fock-Darwin energy levels. Spin-blockade related bimodal behavior is also observed in the peak intensities due to spin dependent tunneling. In the nonlinear regime, a regular pattern of negative differential conductance is detected. This is compared with different theoretical cases demonstrating a subtle interplay between spin dependent tunneling and source and drain resistance asymmetries.
AB - Results of combined experimental and theoretical studies of transport spectra of a quantum dot in a magnetic field are reported. In the linear regime, the observed oscillatory behavior of the conductance peaks with varying magnetic field is interpreted in terms of successive rearrangements in the electronic ground state configurations of Fock-Darwin energy levels. Spin-blockade related bimodal behavior is also observed in the peak intensities due to spin dependent tunneling. In the nonlinear regime, a regular pattern of negative differential conductance is detected. This is compared with different theoretical cases demonstrating a subtle interplay between spin dependent tunneling and source and drain resistance asymmetries.
KW - Coulomb blockade
KW - Fock-Darwin spectrum
KW - Negative differential conductance
KW - Quantum dot transport
KW - Spin blockade
UR - http://www.scopus.com/inward/record.url?scp=33646201941&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2005.12.086
DO - 10.1016/j.physe.2005.12.086
M3 - Article
AN - SCOPUS:33646201941
VL - 32
SP - 442
EP - 445
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 1-2 SPEC. ISS.
ER -