scholarly journals Transport through constricted quantum Hall edge systems: Beyond the quantum point contact

2008 ◽  
Vol 77 (3) ◽  
Author(s):  
Siddhartha Lal
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Point

scholarly journals Symmetry Properties of Mixed and Heat Photo-Assisted Noise in the Quantum Hall Regime

Entropy ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 730 ◽  
Author(s):  
Flavio Ronetti ◽  
Matteo Acciai ◽  
Dario Ferraro ◽  
Jérôme Rech ◽  
Thibaut Jonckheere Thierry Martin ◽  
...  
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Dc Voltage ◽  
Quantum Hall States ◽  
Quantum Hall Regime ◽  
Symmetry Properties ◽  
Hall Regime ◽  
Mixed Noise ◽  
Quantum Point

We investigate the photo-assisted charge-heat mixed noise and the heat noise generated by periodic drives in Quantum Hall states belonging to the Laughlin sequence. Fluctuations of the charge and heat currents are due to weak backscattering induced in a quantum point contact geometry and are evaluated at the lowest order in the tunneling amplitude. Focusing on the cases of a cosine and Lorentzian periodic drive, we show that the different symmetries of the photo-assisted tunneling amplitudes strongly affect the overall profile of these quantities as a function of the AC and DC voltage contributions, which can be tuned independently in experiments.

scholarly journals Coherent tunnelling across a quantum point contact in the quantum Hall regime

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
F. Martins ◽  
S. Faniel ◽  
B. Rosenow ◽  
H. Sellier ◽  
S. Huant ◽  
...  
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Quantum Point

scholarly journals Quantum Hall Effect and Quantum Point Contact in Bilayer-Patched Epitaxial Graphene

Nano Letters ◽  
2014 ◽  
Vol 14 (6) ◽  
pp. 3369-3373 ◽  
Author(s):  
Cassandra Chua ◽  
Malcolm Connolly ◽  
Arseniy Lartsev ◽  
Tom Yager ◽  
Samuel Lara-Avila ◽  
...  
Keyword(s):  
Hall Effect ◽  
Quantum Hall Effect ◽  
Quantum Hall ◽  
Point Contact ◽  
Epitaxial Graphene ◽  
Quantum Point Contact ◽  
Quantum Point

Admittance Measurement for a Quantum Point Contact in a Multiterminal Quantum Hall Device

2011 ◽  
Vol 50 (4) ◽  
pp. 04DJ04 ◽  
Author(s):  
Kazuhisa Washio ◽  
Masayuki Hashisaka ◽  
Hiroshi Kamata ◽  
Koji Muraki ◽  
Toshimasa Fujisawa
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Point ◽  
Admittance Measurement

Admittance Measurement for a Quantum Point Contact in a Multiterminal Quantum Hall Device

2011 ◽  
Vol 50 (4S) ◽  
pp. 04DJ04 ◽  
Author(s):  
Kazuhisa Washio ◽  
Masayuki Hashisaka ◽  
Hiroshi Kamata ◽  
Koji Muraki ◽  
Toshimasa Fujisawa
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Point ◽  
Admittance Measurement
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