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Magnetic Field Dependence of the Critical Current in S-N Bilayer Thin FilmsHere we investigate the effects a non-uniform applied magnetic field has on superconducting transition-edge sensors (TESs) critical current. This has implications on TES optimization. It has been shown that TESs resistive transition can be altered by magnetic fields. We have observed critical current rectification effects and explained these effects in terms of a magnetic self-field arising from asymmetric current injection into the sensor. Our TES physical model shows that this magnetic self-field can result in significantly degraded or improved TES performance. In order for this magnetically tuned TES strategy to reach its full potential we are investigating the effect a non-uniform applied magnetic field has on the critical current.
Document ID
20140009205
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Sadleir, John E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Lee, Sang-Jun
(Oak Ridge Associated Universities Greenbelt, MD, United States)
Smith, Stephen James
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Bandler, Simon
(Maryland Univ. College Park, MD, United States)
Chervenak, James
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kilbourne, Caroline A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Finkbeiner, Fred M.
(Wyle Information Systems Greenbelt, MD, United States)
Porter, Frederick S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kelley, Richard L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Adams, Joseph S.
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Eckart, Megan E.
(Maryland Univ. Baltimore County Catonsville, MD, United States)
Busch, Sarah
(Oak Ridge Associated Universities Greenbelt, MD, United States)
Porst, Jan-Patrick
(Maryland Univ. College Park, MD, United States)
Date Acquired
July 16, 2014
Publication Date
June 24, 2013
Subject Category
Solid-State Physics
Astronomy
Report/Patent Number
GSFC-E-DAA-TN10021
Meeting Information
Meeting: International Workshop on Low Temperature Detectors (LTD)
Location: Pasadena, CA
Country: United States
Start Date: June 24, 2013
End Date: June 28, 2013
Sponsors: California Inst. of Tech.
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
CONTRACT_GRANT: NNG12PL17C
CONTRACT_GRANT: NNH06CC03B
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Field Dependence
Bilayer
Magnetic
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