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Experimental Progress towards Probing the Ground State of an Electron-Hole Bilayer by Low-Temperature Transport
Joint Authors
Croxall, A. F.
Ritchie, D. A.
Beere, H. E.
Waldie, J.
Pepper, M.
Das Gupta, K.
Farrer, I.
Nicoll, C. A.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-22, 22 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-01-04
Country of Publication
Egypt
No. of Pages
22
Main Subjects
Abstract EN
Recently, it has been possible to design independently contacted electron-hole bilayers (EHBLs) with carrier densities <5×1010 cm2 in each layer and a separation of 10–20 nm in a GaAs/AlGaAs system.
In these EHBLs, the interlayer interaction can be stronger than the intralayer interactions.
Theoretical works have indicated the possibility of a very rich phase diagram in EHBLs consisting of excitonic superfluid phases, charge density waves, and Wigner crystals.
Experiments have revealed that the Coulomb drag on the hole layer shows strong nonmonotonic deviations from a ~T2 behaviour expected for Fermi-liquids at low temperatures.
Simultaneously, an unexpected insulating behaviour in the single-layer resistances (at a highly “metallic” regime with kFl>500) also appears in both layers despite electron mobilities of above ~106cm2V−1s−1 and hole mobilities over ~105cm2V−1s−1.
Experimental data also indicates that the point of equal densities (n=p) is not special.
American Psychological Association (APA)
Das Gupta, K.& Croxall, A. F.& Waldie, J.& Nicoll, C. A.& Beere, H. E.& Farrer, I.…[et al.]. 2011. Experimental Progress towards Probing the Ground State of an Electron-Hole Bilayer by Low-Temperature Transport. Advances in Condensed Matter Physics،Vol. 2011, no. 2011, pp.1-22.
https://search.emarefa.net/detail/BIM-493878
Modern Language Association (MLA)
Das Gupta, K.…[et al.]. Experimental Progress towards Probing the Ground State of an Electron-Hole Bilayer by Low-Temperature Transport. Advances in Condensed Matter Physics No. 2011 (2011), pp.1-22.
https://search.emarefa.net/detail/BIM-493878
American Medical Association (AMA)
Das Gupta, K.& Croxall, A. F.& Waldie, J.& Nicoll, C. A.& Beere, H. E.& Farrer, I.…[et al.]. Experimental Progress towards Probing the Ground State of an Electron-Hole Bilayer by Low-Temperature Transport. Advances in Condensed Matter Physics. 2011. Vol. 2011, no. 2011, pp.1-22.
https://search.emarefa.net/detail/BIM-493878
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-493878