Gap Width Dependence of Transport through Quantum Point Contact in hBN/Graphene/hBN in the Quantum Hall Regime

2018 ◽  
Author(s):  
N.F. Ahmad ◽  
K. Komatsu ◽  
S. Moriyama ◽  
Y. Morita ◽  
K. Watanabe ◽  
...  
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Quantum Point ◽  
Gap Width

Effect of gap width on electron transport through quantum point contact in hBN/graphene/hBN in the quantum Hall regime

2019 ◽  
Vol 114 (2) ◽  
pp. 023101 ◽  
Author(s):  
Nurul Fariha Ahmad ◽  
Takuya Iwasaki ◽  
Katsuyoshi Komatsu ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
...  
Keyword(s):  
Electron Transport ◽  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Quantum Point ◽  
Gap Width

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 Nontrivial transition of transmission in a highly open quantum point contact in the quantum Hall regime

2017 ◽  
Vol 96 (20) ◽  
Author(s):  
Changki Hong ◽  
Jinhong Park ◽  
Yunchul Chung ◽  
Hyungkook Choi ◽  
Vladimir Umansky
Keyword(s):  
Quantum Hall ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Open Quantum ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Quantum Point
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