scholarly journals Many-body correlation effects in the spatially separated electron and hole layers in the coupled quantum wells

2014 ◽  
Vol 453 ◽  
pp. 49-52 ◽  
Author(s):  
V.S. Babichenko ◽  
I.Ya. Polishchuk
Keyword(s):  
Quantum Wells ◽  
Correlation Effects ◽  
Many Body ◽  
Coupled Quantum Wells ◽  
Body Correlation

Exciton Gas versus Electron Hole Liquid in the Double Quantum Wells

2013 ◽  
Vol 1617 ◽  
pp. 37-42
Author(s):  
Vladimir S. Babichenko ◽  
Ilya Ya. Polishchuk
Keyword(s):  
Quantum Wells ◽  
Gas Phase ◽  
Double Quantum ◽  
Many Body ◽  
Electron Hole ◽  
Coupled Quantum Wells ◽  
The Many ◽  
Special Case ◽  
Selection Of ◽  
Body Correlation

ABSTRACTThe many-body correlation effects in the spatially separated electron and hole layers in the coupled quantum wells (CQW) are investigated. A special case of the many-component electron-hole system is considered, ν>>1 being the number of the components. Keeping the main diagrams in the parameter 1/ν allows us to justify the selection of the RPA diagrams. The ground state of the system is found to be the electron-hole liquid with the energy smaller than the dense exciton gas phase. The possible connection is discussed between the results obtained and the experiments in which the inhomogeneous state in the CQW is found.

The missing charge problem and many-body correlation effects

1989 ◽  
Vol 219 (1) ◽  
pp. 10-14 ◽  
Author(s):  
H. Sagawa ◽  
P.M. Boucher ◽  
B. Castel ◽  
Y. Okuhara
Keyword(s):  
Correlation Effects ◽  
Many Body ◽  
Body Correlation

Coulomb drag in strongly coupled quantum wells: Temperature dependence of the many-body correlations

2019 ◽  
Vol 115 (20) ◽  
pp. 202105
Author(s):  
M. Zarenia ◽  
S. Conti ◽  
F. M. Peeters ◽  
D. Neilson
Keyword(s):  
Quantum Wells ◽  
Temperature Dependence ◽  
Many Body ◽  
Coulomb Drag ◽  
Coupled Quantum Wells ◽  
Strongly Coupled ◽  
The Many

MANY-BODY EFFECTS IN FRICTIONAL DRAG BETWEEN COUPLED TWO-DIMENSIONAL ELECTRON SYSTEMS

1999 ◽  
Vol 13 (05n06) ◽  
pp. 469-478
Author(s):  
BEN YU-KUANG HU
Keyword(s):  
Quantum Wells ◽  
Quantitative Measure ◽  
Voltage Response ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Many Body ◽  
Frictional Drag ◽  
Electron Gases ◽  
Coupled Quantum Wells ◽  
Many Body Effects

Independently contacted coupled quantum wells separated by barriers which allow significant interlayer interactions but no tunneling have been fabricated. When current is passed through one layer, the interlayer interactions drag carriers in the second layer, resulting in a voltage response (for open circuits). The magnitude of the response gives a quantitative measure of the effective interlayer interactions and response functions of the system, and hence this is an excellent laboratory for the study of many-body phenomena in two-dimensional electron gases. We review the Boltzmann and Kubo formalisms for the theory of drag effects in coupled quantum wells and discuss three specific cases where many-body effects significantly affect the drag: (1) acoustic phonon-mediated drag, (2) large enhancements due to coupled plasmon modes, and (3) interplay of screening and Landau levels in large magnetic fields.

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