Browsing by Subject "Coupled quantum wire systems"

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    Short-range correlations in coupled quantum-wire systems
    (TÜBİTAK, 2002) Yurtsever, A.; Tanatar, Bilal
    We study the contact values of the inter-wire pair-correlation function in electron-electron and electron-hole double-wire systems. For this purpose the ladder approximation as generalized to multicomponent systems is used. The ladder approximation yields positive values for the inter-wire gee(0) and geh(0) for all values of the density parameter rs and distance d between the wires. This allows us to infer possible instabilities in the system more reliably compared to other approaches. We also investigate the effects of quantum-wire width and screening on the inter-wire pair-correlation functions.