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- W2000940968 abstract "We investigate a potential landscape of a ballistic quantum wire (QW) adiabatically connected to electron reservoirs with an applied voltage V. Three qualitatively different types of potential distribution are found to appear depending on a bias. Two characteristic voltages V1 and V2 dependent on positive background charge density and geometry of the structure determine the bias intervals, where these regimes realize. At low bias, V<V1, an applied voltage drops near both contacts and electric field in the single-mode part of the QW vanishes. When V1<V<V2 a potential peak appears in the transition region between the cathode reservoir and the QW. The main part of the applied voltage drops near this peak, the conduction band bottom in the central part of the QW being pinned to the electrochemical potential of the anode reservoir. At the bias V>V2 the potential in the central part of the QW becomes nonuniform since the anode reservoir cannot supply enough electrons to screen the electric field." @default.
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- W2000940968 date "2005-03-01" @default.
- W2000940968 modified "2023-09-27" @default.
- W2000940968 title "Potential landscape of a biased quantum wire" @default.
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- W2000940968 doi "https://doi.org/10.1016/j.physe.2004.10.008" @default.
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