Current-voltage spectroscopy of the subband structure of strongly pinched-off quantum point contacts

2009 ◽  
Vol 95 (23) ◽  
pp. 233115 ◽  
Author(s):  
J. Song ◽  
J. Mikalopas ◽  
G. R. Aizin ◽  
J. L. Reno ◽  
J. P. Bird
Keyword(s):  
Quantum Point Contacts ◽  
Point Contacts ◽  
Current Voltage ◽  
Quantum Point ◽  
Subband Structure

Electronic Transport through Conical Nanosized GaAs Pillars

2015 ◽  
Vol 1735 ◽  
Author(s):  
Thorben Bartsch ◽  
Christian Heyn ◽  
Wolfgang Hansen
Keyword(s):  
Electronic Transport ◽  
Three Dimensional ◽  
Electronic States ◽  
Quantum Point Contacts ◽  
Point Contacts ◽  
Quantum Size ◽  
Current Voltage ◽  
Quantum Point ◽  
Current Voltage Characteristics ◽  
Lattice Matched

ABSTRACTWe study the electronic transport through epitaxial GaAs nanopillars that are only 16 nm long, with diameters of about 100 nm at the upper and 40 nm at the lower end. The pillars can be considered to be very short conical nanowires embedded in AlGaAs. They represent quantum point contacts between two perfectly lattice matched three-dimensional GaAs charge reservoirs. Distinctive asymmetries are found in the current-voltage characteristics. We associate them with the conical shape of the pillars. Although contact reservoirs and pillars are made from the same material, the transport through the pillars is dominated by tunneling across shallow barriers. This is explained by the quantum size effect on the electronic states within the pillars.

Current-voltage characteristics of quantum point contacts in the high-bias regime

1994 ◽  
Vol 9 (6) ◽  
pp. 1220-1225 ◽  
Author(s):  
T Heinzel ◽  
D A Wharam ◽  
F M de Aguiar ◽  
J P Kotthaus ◽  
G Bohm ◽  
...  
Keyword(s):  
Quantum Point Contacts ◽  
Point Contacts ◽  
Current Voltage ◽  
High Bias ◽  
Quantum Point ◽  
Current Voltage Characteristics

scholarly journals Current-voltage curves of gold quantum point contacts revisited

2000 ◽  
Vol 77 (5) ◽  
pp. 708-710 ◽  
Author(s):  
K. Hansen ◽  
S. K. Nielsen ◽  
M. Brandbyge ◽  
E. Lægsgaard ◽  
I. Stensgaard ◽  
...  
Keyword(s):  
Quantum Point Contacts ◽  
Point Contacts ◽  
Current Voltage ◽  
Quantum Point

Fast and accurate current-voltage curves of metallic quantum point contacts

2000 ◽  
Vol 71 (4) ◽  
pp. 1793-1803 ◽  
Author(s):  
K. Hansen ◽  
S. K. Nielsen ◽  
E. Lægsgaard ◽  
I. Stensgaard ◽  
F. Besenbacher
Keyword(s):  
Quantum Point Contacts ◽  
Point Contacts ◽  
Current Voltage ◽  
Quantum Point

Nonlinear current-voltage curves of gold quantum point contacts

2005 ◽  
Vol 87 (10) ◽  
pp. 103104 ◽  
Author(s):  
M. Yoshida ◽  
Y. Oshima ◽  
K. Takayanagi
Keyword(s):  
Quantum Point Contacts ◽  
Point Contacts ◽  
Current Voltage ◽  
Quantum Point

Different Transmission Regimes of Two Quantum Point Contacts in a Magnetic Field

1995 ◽  
Vol 5 (9) ◽  
pp. 1257-1262
Author(s):  
V. Marigliano Ramaglia ◽  
F. Ventriglia ◽  
G. P. Zucchelli
Keyword(s):  
Magnetic Field ◽  
Quantum Point Contacts ◽  
Point Contacts ◽  
Quantum Point

Double-Channel Electron Transport in Suspended Quantum Point Contacts with in-Plane Side Gates

2020 ◽  
Vol 54 (12) ◽  
pp. 1605-1610
Author(s):  
D. A. Pokhabov ◽  
A. G. Pogosov ◽  
E. Yu. Zhdanov ◽  
A. K. Bakarov ◽  
A. A. Shklyaev
Keyword(s):  
Electron Transport ◽  
Quantum Point Contacts ◽  
Point Contacts ◽  
Quantum Point ◽  
Double Channel

Resonant detection of microwave radiation in a circular two-dimensional electron system with quantum point contacts

2005 ◽  
Vol 87 (9) ◽  
pp. 092107 ◽  
Author(s):  
P. S. Dorozhkin ◽  
S. V. Tovstonog ◽  
S. A. Mikhailov ◽  
I. V. Kukushkin ◽  
J. H. Smet ◽  
...  
Keyword(s):  
Microwave Radiation ◽  
Electron System ◽  
Quantum Point Contacts ◽  
Two Dimensional ◽  
Point Contacts ◽  
Dimensional Electron ◽  
Dimensional Electron System ◽  
Quantum Point
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