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Resonant Tunneling Spectroscopy of Interacting Localised States -- Observation of the Correlated Current Through Two Impurities | | V. V. Kuznetsov
; A. K. Savchenko
; D. R. Mace
; E. H. Linfield
; D. A. Ritchie
; | | Date: |
3 Nov 1997 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Strongly Correlated Electrons | cond-mat.mes-hall cond-mat.str-el | | Affiliation: | Exeter University, UK), D. R. Mace, E. H. Linfield and D. A. Ritchie (Cavendish Laboratory, Cambridge, UK | | Abstract: | We study effects of Coulomb interactions between localised states in a potential barrier by measuring resonant-tunneling spectra with a small bias applied along the barrier. In the ohmic regime the conductance of 0.2um--gate lateral GaAs microstructures shows distinct peaks associated with individual localised states. However, when an electric field is applied new states start contributing to the current, which becomes a correlated electron flow through two interacting localised states. Several situations of such correlations have been observed, and the conclusions are confirmed by calculations. | | Source: | arXiv, cond-mat/9711005 | | Services: | Forum | Review | PDF | Favorites | |
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