Persistent currents in normal metal rings.
Bleszynski-Jayich, AC, Shanks, WE, Peaudecerf, B, Ginossar, E, von Oppen, F, Glazman, L and Harris, JG (2009) Persistent currents in normal metal rings. Science, 326 (5950). pp. 272-275.
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Quantum mechanics predicts that the equilibrium state of a resistive metal ring will contain a dissipationless current. This persistent current has been the focus of considerable theoretical and experimental work, but its basic properties remain a topic of controversy. The main experimental challenges in studying persistent currents have been the small signals they produce and their exceptional sensitivity to their environment. We have developed a technique for detecting persistent currents that allows us to measure the persistent current in metal rings over a wide range of temperatures, ring sizes, and magnetic fields. Measurements of both a single ring and arrays of rings agree well with calculations based on a model of non-interacting electrons.
|Divisions :||Faculty of Engineering and Physical Sciences > Physics|
|Date :||9 October 2009|
|Identification Number :||10.1126/science.1178139|
|Additional Information :||Copyright 2009 American Association for the Advancement of Science. This is the authors' accepted version.|
|Depositing User :||Symplectic Elements|
|Date Deposited :||09 Dec 2015 19:12|
|Last Modified :||09 Dec 2015 19:12|
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