ELECTRON-HOLE COHERENCE AND CHARGING EFFECTS IN ULTRASMALL METALLIC GRAINS
@article{Drewes1998ELECTRONHOLECA, title={ELECTRON-HOLE COHERENCE AND CHARGING EFFECTS IN ULTRASMALL METALLIC GRAINS}, author={S. Drewes and Scot R. Renn and Francisco Guinea}, journal={Physical Review Letters}, year={1998}, volume={80}, pages={1046-1049} }
We consider a model for electron tunneling between a pair of ultrasmall metallic grains. Under appropriate circumstances, non-equilibrium final state effects can strongly enhance tunneling and produce electron-hole coherence between the grains. The model displays a quantum phase transition between a Coulomb blockaded state to a coherent state exhibiting subohmic tunneling conductance. The critical state of the junction exhibits a temperature independent resistance of order $h/e^2$. Finally we…
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Abstract
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