Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 19, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2917580
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Science and industry demand ever more sensitive measurements on ever smaller systems, as exemplified by spintronics, nanoelectromechanical system, and spin-based quantum information processing, where single electronic spin detection poses a grand challenge. Superconducting quantum interference devices (SQUIDs) have yet to be effectively applied to nanoscale measurements. Here, we show that a simple bilayer deposition route, combining photolithography with focused ion beam patterning, produces high performance nanoscale SQUIDs. We present results of noise measurements on these nanoSQUIDs which correspond to a magnetic flux sensitivity of around 0.2 mu Phi(0)/Hz(1/2). This represents one of the lowest noise values achieved for a SQUID device operating above 1 K. (c) 2008 American Institute of Physics.
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