Webster, C.H. (2013) Quantum phase slip. In: McGraw-Hill Yearbook of Science and Technology 2013. McGraw-Hill: New York. ISBN 9780071801409 (doi: 10.1036/1097-8542.YB130173)
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Abstract
Quantum phase slip (QPS) is a phenomenon that occurs in ultranarrow superconducting nanowires and other superconducting nanostructures. In a superconductor cooled below its critical temperature Tc, electrical current can flow without resistance. However, when the radius of a superconducting nanowire is sufficiently small, quantum energy fluctuations can cause portions of the nanowire instantaneously to enter the normal resistive state. The superconducting state is characterized by a wave function with an amplitude and phase. During a quantum fluctuation, the amplitude drops temporarily to zero. When this occurs, the phase is undefined and can jump by a multiple of 2π ( Fig. 1 a ). This is known as QPS and temporarily blocks the flow of current along the nanowire.
| Item Type: | Book Sections |
|---|---|
| Keywords: | Electrical metrology, Josephson junctions, nanowires, quantum duality, quantum tunneling, superconductivity. |
| Status: | Published |
| Glasgow Author(s) Enlighten ID: | Webster, Dr Carol |
| Authors: | Webster, C.H. |
| College/School: | College of Science and Engineering > School of Computing Science |
| Publisher: | McGraw-Hill |
| ISBN: | 9780071801409 |
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