Magneto-polarisability of mesoscopic rings

Abstract

We calculate the average polarisability of two dimensional mesoscopic rings in the presence of an Aharonov-Bohm flux. The screening is taken into account self-consistently within a mean-field approximation. We investigate the effects of statistical ensemble, finite frequency and disorder. We emphasize geometrical effects which make the observation of field dependent polarisability much more favourable on rings than on disks or spheres of comparable radius. The ratio of the flux dependent to the flux independent part is estimated for typical GaAs rings.

pages, Revtex, 1 eps figure

References in corpus (4)

• Dynamic response of isolated Aharonov-Bohm rings coupled to an electromagnetic resonator
• Characteristic Potentials for Mesoscopic Rings Threaded by an Aharonov-Bohm Flux
• Conductance of Aharonov--Bohm Rings: From the Discrete to the Continuous Spectrum Limit
• Giant Microwave Absorption in Metallic Grains: Relaxation Mechanism

Cited by in corpus (9)

• AC electric and magnetic responses of non-connected Aharonov-Bohm rings
• Electron-Electron Interaction in Disordered Mesoscopic Systems: Weak Localization and Mesoscopic Fluctuations of Polarizability and Capacitance
• Measurements of flux dependent screening in Aharonov-Bohm rings
• Sign Reversals of ac Magnetoconductance in Isolated Quantum Dots
• Absorption of surface acoustic-waves by quantum dots: discrete spectrum limit
• Frequency Dependence of Magnetopolarizability of Mesoscopic Grains
• Magneto-polarisability of mesoscopic systems
• Collective versus single-particle effects in the optical spectra of finite electronic quantum systems
• Quantum Corrections to the Polarizability and Dephasing in Isolated Disordered Metals