4 papers · 1 filter
Comment on ``Friedel phases and phases of transmission amplitudes in quantum scattering systems" by T. Taniguchi and M. Buettiker
P. Singha Deo
We take a modified boundary condition at the dead end of a stub to simulate transmission zeroes being replaced by minima and then the discontinuous phase slip (or decrease) at the…
Phase of Aharonov-Bohm oscillations in conductance of mesoscopic systems
P. Singha Deo, A. M. Jayannavar
Motivated by a recent experiment we analyze in detail the phase of Aharonov-Bohm oscillations across a 1D ring with a stub coupled to one of its arms, in the presence of a magnetic…
Topological effects on magnitude of persistent current in a ring
P. Singha Deo
We show that defects in 1D rings decrease the conductance (when the ring is opened up) many more times than it decreases the persistent currents. This means that the states in such…
How general is Legett's conjecture for a mesoscopic ring?
P. Singha Deo
It has been shown[19] that in a loop of length u to which a single stub of length v is attached (fig. 1 in ref. 19), the parity effect is completely destroyed when v/u. It was…