Many-body effects in quantum rings: From the Aharonov-Bohm transport to the quantum Hall regime

2011 ◽  
Author(s):  
E. Räsänen ◽  
Jisoon Ihm ◽  
Hyeonsik Cheong
Keyword(s):  
Quantum Hall ◽  
Many Body ◽  
Quantum Rings ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Many Body Effects ◽  
Aharonov Bohm

AHARONOV-BOHM EFFECT IN THE QUANTUM HALL REGIME

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1404-1408 ◽  
Author(s):  
A. J. M. GIESBERS ◽  
U. ZEITLER ◽  
J. C. MAAN ◽  
D. REUTER ◽  
A. D. WIECK
Keyword(s):  
Quantum Hall ◽  
Atomic Force ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Ring Diameter ◽  
Local Anodic Oxidation ◽  
Large Period ◽  
Inner Diameter ◽  
Bohm Effect ◽  
Aharonov Bohm

We have fabricated quantum rings in a GaAs/GaAlAs heterostructure 2DEG by local anodic oxidation with an atomic force microscope. In low magnetic fields we observe Aharonov-Bohm oscillations with a period of 60 mT corresponding to an effective ring diameter of 300 nm. In the high field regime, between filling factors ν = 2/3 and ν = 3, we observe Aharonov-Bohm oscillations of quantum Hall edge channels with a surprisingly large period, Δ B = 163 mT , corresponding to an edge channel around the inner diameter of the ring.

Two beam Aharonov–Bohm interference in the integer quantum Hall regime

2008 ◽  
Vol 40 (5) ◽  
pp. 1706-1708 ◽  
Author(s):  
L.V. Litvin ◽  
A. Helzel ◽  
H.-P. Tranitz ◽  
W. Wegscheider ◽  
C. Strunk
Keyword(s):  
Quantum Hall ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Integer Quantum ◽  
Aharonov Bohm

Many-body coherence effects in conduction through a quantum dot in the fractional quantum Hall regime

1992 ◽  
Vol 46 (8) ◽  
pp. 4681-4692 ◽  
Author(s):  
Jari M. Kinaret ◽  
Yigal Meir ◽  
Ned S. Wingreen ◽  
Patrick A. Lee ◽  
Xiao-Gang Wen
Keyword(s):  
Quantum Dot ◽  
Quantum Hall ◽  
Many Body ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Coherence Effects ◽  
Quantum Hall Regime ◽  
Hall Regime
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