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Persistent Currents in Normal Metal Rings - Paperback & Black/White

ByWill Shanks

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In this work, I present measurements of persistent currents in normal metal rings performed with cantilever torsional magnetometry. With this technique, the typical persistent current (the component that varies randomly from ring to ring) was measured with high sensitivity. I report measured magnitudes (~ 1pA) over two orders of magnitude smaller than observed in previous studies. These measurements extend the range of temperature and magnetic field over which the typical current has been observed. The wide magnetic field range allowed us to study the effect of magnetic field penetrating the ring. It also enabled the recording of many independent measurements of the current magnitude in a single sample. These independent measurements are necessary to characterize the persistent current magnitude because it is a random quantity. From these measurements of the persistent current, I also characterize the parametric dependence of the typical current on sample orientation and number of rings.

Details

Publication Date
Feb 28, 2011
Language
English
Category
Science & Medicine
Copyright
All Rights Reserved - Standard Copyright License
Contributors
By (author): Will Shanks

Specifications

Pages
438
Binding
Perfect Bound
Interior Color
Black & White
Dimensions
US Letter (8.5 x 11 in / 216 x 279 mm)

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