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IBM Journal of Research and Development  
Volume 32, Number 3, Page 359 (1988)
Mesoscopic Phenomena and Nanolithographic ...
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Isolated rings of mesoscopic dimensions. Quantum coherence and persistent currents

by H.-F. Cheung, Y. Gefen, E. K. Riedel
Persistent currents in small nonsuperconducting rings threaded by a magnetic flux are a manifestation of novel quantum effects in submicron systems. We present theoretical results for one-channel and multichannel systems concerning the dependence of the current amplitude on the number of channels and geometry, temperature, and degree of disorder. Inelastic scattering is considered for one-channel loops only. We also discuss the observability of the effect.
Related Subjects: Carrier transport in small structures; Mesoscopic phenomena; Physics, solid state