DC Josephson current with Zeeman splitting in a superconductor–quantum-dot–superconductor system

2000 ◽  
Vol 272 (3) ◽  
pp. 197-206 ◽  
Author(s):  
Hong-Kang Zhao
Keyword(s):  
Quantum Dot ◽  
Zeeman Splitting ◽  
Josephson Current

scholarly journals Understanding the Josephson Current through a Kondo-Correlated Quantum Dot

2012 ◽  
Vol 108 (22) ◽  
Author(s):  
D. J. Luitz ◽  
F. F. Assaad ◽  
T. Novotný ◽  
C. Karrasch ◽  
V. Meden
Keyword(s):  
Quantum Dot ◽  
Josephson Current

scholarly journals Excitation Spectrum of Two Correlated Electrons in a Lateral Quantum Dot with Negligible Zeeman Splitting

2006 ◽  
Vol 96 (12) ◽  
Author(s):  
C. Ellenberger ◽  
T. Ihn ◽  
C. Yannouleas ◽  
U. Landman ◽  
K. Ensslin ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Excitation Spectrum ◽  
Zeeman Splitting ◽  
Correlated Electrons

scholarly journals Nonlinear and dot-dependent Zeeman splitting in GaAs/AlGaAs quantum dot arrays

2018 ◽  
Vol 97 (3) ◽  
Author(s):  
V. P. Michal ◽  
T. Fujita ◽  
T. A. Baart ◽  
J. Danon ◽  
C. Reichl ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Zeeman Splitting

scholarly journals Near-field photoluminescence spectroscopy of localized states in InGaAsN alloys

2001 ◽  
Vol 692 ◽  
Author(s):  
A. M. Mintairov ◽  
P. A. Blagnov ◽  
T. Kosel ◽  
J. L. Merz ◽  
V. M. Ustinov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Dot ◽  
Near Field ◽  
Zeeman Splitting ◽  
Localized States ◽  
Emission Lines ◽  
Structural And Optical Properties ◽  
Dramatic Difference ◽  
Nitrogen Excess ◽  
Narrow Emission

AbstractWe used near-field magneto-photoluminescence scanning microscopy to study structural and optical properties of quantum-dot-like compositional fluctuations in GaAsN and InGaAsN alloys. We show that these fluctuations manifest themselves by the appearance of narrow emission lines (halfwidth 0.5−2 meV) at temperatures below 70K. We estimated the size, density, and nitrogen excess of individual compositional fluctuations (clusters), revealing phaseseparation effects in the distribution of nitrogen in GaAsN and InGaAsN. We found a dramatic difference in the Zeeman splitting of cluster lines between GaAsN and InGaAsN, indicating a strong effect of In on the exciton g-factor.

scholarly journals Comment on “Josephson Current through a Nanoscale Magnetic Quantum Dot”

2005 ◽  
Vol 94 (22) ◽  
Author(s):  
Mahn-Soo Choi ◽  
Minchul Lee ◽  
Kicheon Kang ◽  
W. Belzig
Keyword(s):  
Quantum Dot ◽  
Josephson Current

Optical Nmr From Single Quantum Dots

1996 ◽  
Vol 442 ◽  
Author(s):  
S. W. Brown ◽  
T. A. Kennedy ◽  
D. Gammon
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Quantum Wells ◽  
Optical Pumping ◽  
Nuclear Orientation ◽  
Energy Levels ◽  
Zeeman Splitting ◽  
Single Quantum ◽  
Interface Fluctuations ◽  
20 Nm

AbstractWe have observed nuclear magnetic resonance (NMR) signatures from constituent Ga and As nuclei in single GaAs quantum dots formed by interface fluctuations in GaAs/AlGaAs quantum wells. Orientation of the nuclear spin system by optical pumping causes an Overhauser shift in the excitonic energy levels proportional to the degree of nuclear orientation. NMR was detected by monitoring changes in the combined Overhauser plus Zeeman splitting of an exciton localized in a single quantum dot as the RF frequency was swept through a nuclear resonance. The NMR signals originate from ∼105 nuclei in the quantum dot — (20 nm)3 volume - representing an increase in sensitivity of five orders of magnitude over previous optical NMR measurements and thirteen orders of magnitude over conventional NMR. The data were fit to Lorentzian lineshapes, giving 75As linewidths on the order of 20 kHz.

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