Magnetic field and temperature dependence of an atomic force microscope-defined quantum point contact

2004 ◽  
Vol 22 (2) ◽  
pp. 570 ◽  
Author(s):  
G. Mori ◽  
M. Lazzarino ◽  
D. Ercolani ◽  
G. Biasiol ◽  
L. Sorba
Keyword(s):  
Magnetic Field ◽  
Temperature Dependence ◽  
Atomic Force Microscope ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Atomic Force ◽  
Quantum Point

Semiconductor quantum point contact fabricated by lithography with an atomic force microscope

1997 ◽  
Vol 71 (18) ◽  
pp. 2689-2691 ◽  
Author(s):  
R. Held ◽  
T. Heinzel ◽  
P. Studerus ◽  
K. Ensslin ◽  
M. Holland
Keyword(s):  
Atomic Force Microscope ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Atomic Force ◽  
Quantum Point

Transport spectroscopy of a quantum point contact created by an atomic force microscope

2006 ◽  
Vol 34 (1-2) ◽  
pp. 519-521 ◽  
Author(s):  
C. Fricke ◽  
J. Regul ◽  
F. Hohls ◽  
D. Reuter ◽  
A.D. Wieck ◽  
...  
Keyword(s):  
Atomic Force Microscope ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Atomic Force ◽  
Quantum Point

PHOTON-ASSISTED TRANSPORT CHARACTERISTICS THROUGH QUANTUM DOT COUPLED TO SUPERCONDUCTING RESERVOIRS

NANO ◽  
2006 ◽  
Vol 01 (03) ◽  
pp. 259-264 ◽  
Author(s):  
A. S. ATALLAH ◽  
A. H. PHILLIPS ◽  
A. F. AMIN ◽  
M. A. SEMARY
Keyword(s):  
Magnetic Field ◽  
Numerical Calculation ◽  
Quantum Dot ◽  
Resonant Tunneling ◽  
Andreev Reflection ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Time Varying ◽  
Quantum Point ◽  
Tunneling Behavior

The influence of time-varying fields on the transport through a mesoscopic device has been investigated. This mesoscopic device is modeled as a quantum dot coupled to superconducting reservoirs via quantum point contact. The effect of a magnetic field and the Andreev reflection process were taken into account. The conductance was deduced by using Landuaer–Buttiker equation. A numerical calculation has been performed that shows a resonant tunneling behavior. Such investigation is important for fabricating photoelectron mesoscopic devices.

Resistively detected-NMR in triple-gate quantum point contact: magnetic field dependence

2019 ◽  
Author(s):  
Annisa Noorhidayati ◽  
Mohammad Hamzah Fauzi ◽  
Shunta Maeda ◽  
Ken Sato ◽  
Katsumi Nagase ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Point

scholarly journals Quantum point contact in a magnetic field: Far-infrared resonant heating observed in photoconductivity

1999 ◽  
Vol 75 (20) ◽  
pp. 3150-3152 ◽  
Author(s):  
R. J. Heron ◽  
R. A. Lewis ◽  
B. E. Kane ◽  
G. R. Facer ◽  
R. G. Clark ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Point Contact ◽  
Far Infrared ◽  
Quantum Point Contact ◽  
Quantum Point ◽  
Resonant Heating

scholarly journals Effective Landé factors for an electrostatically defined quantum point contact in silicene

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bartłomiej Rzeszotarski ◽  
Alina Mreńca-Kolasińska ◽  
François M. Peeters ◽  
Bartłomiej Szafran
Keyword(s):  
Magnetic Field ◽  
Point Contact ◽  
Zeeman Splitting ◽  
Orbit Coupling ◽  
Quantum Point Contact ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Quantum Point ◽  
Landé Factors ◽  
Strong Spin

AbstractThe transconductance and effective Landé $$g^*$$ g ∗ factors for a quantum point contact defined in silicene by the electric field of a split gate is investigated. The strong spin–orbit coupling in buckled silicene reduces the $$g^*$$ g ∗ factor for in-plane magnetic field from the nominal value 2 to around 1.2 for the first- to 0.45 for the third conduction subband. However, for perpendicular magnetic field we observe an enhancement of $$g^*$$ g ∗ factors for the first subband to 5.8 in nanoribbon with zigzag and to 2.5 with armchair edge. The main contribution to the Zeeman splitting comes from the intrinsic spin–orbit coupling defined by the Kane–Mele form of interaction.

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