Theory of Ballistic Quantum Transport through a 1D Constriction
In this paper the ballistic quantum transport through a 1D constriction in a 2D electron gas is investigated using a refined formalism. The quantization of the conductance at integer multiples of 2e 2/h is found to be the main property of these quantum point contacts. The agreement and discrepancies with the experiments and the existing theories are summarized. Special emphasis is given to the effects of the constriction geometry and finite temperature. Some unresolved aspects of the experiments are clarified on this basis.
KeywordsResonance Structure Working Party Quantum Conductance Quantum Point Contact Refined Formalism
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