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We revisit the Coulomb blockade of the tunnel junction with conductance much smaller than e2/. We study the junction with capacitance C, embedded in an Ohmic electromagnetic environment modeled by a series resistance R which produces the Nyquist noise. In the semiclassical limit, the Nyquist noise charges the junction by a random charge with a Gaussian distribution. Assuming the Gaussian distribution,...
We study theoretically persistent currents in rings made of band insulators with a fully occupied valence band and empty conduction band. We derive an expression for the persistent current in a one‐dimensional (1D) insulating ring with an arbitrary valence band ε(k). Setting for ε(k) the realistic (numerically calculated) valence bands, we estimate persistent currents in the nanorings made of real...
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