R.M. Macfarlane, R.L. Cone
Physical Review B - CMMP
Electro-static potentials for samples with the topology of a ring and penetrated by an Aharonov-Bohm flux are discussed. The sensitivity of the electron-density distribution to small variations in the flux generates an effective electro-static potential which is itself a periodic function of flux. We investigate a simple model in which the flux sensitive potential leads to a persistent current which is enhanced compared to that of a loop of non-interacting electrons. For sample geometries with contacts the sensitivity of the electro-static potential to flux leads to a flux-induced capacitance. This capacitance gives the variation in charge due to an increment in flux. The flux-induced capacitance is contrasted with the electro-chemical capacitance which gives the variation in charge due to an increment in an electro-chemical potential. The discussion is formulated in terms of characteristic functions which give the variation of the electro-static potential in the interior of the conductor due to an increment in the external control parameters (flux, electro-chemical potentials). © 1994 IOP publishing Ltd.
R.M. Macfarlane, R.L. Cone
Physical Review B - CMMP
J.H. Kaufman, Owen R. Melroy, et al.
Synthetic Metals
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
O.F. Schirmer, K.W. Blazey, et al.
Physical Review B