Development of NbTiN constriction junctions and superconducting quantum interference devices
ORAL
Abstract
Superconducting Quantum Interference Devices (SQUIDs) have become a leading tool for magnetometry with a wide range of applications. In this work, we investigate the properties of NbTiN SQUIDs created with a patterned constriction junction. The NbTiN film was grown through reactive sputtering, and then patterned using e-beam lithography and ion milling. SQUIDs were fabricated with constrictions as narrow as 50nm across, and loop areas of approximately 1μm2. At 250mK, field dependent voltage oscillations were observed up to .3T, with an effective area consistent with the physical dimensions of the device.
*This work was supported by the Laboratory Directed Research and Development Program at Sandia National Laboratories and was performed, in part, at the Center for Integrated Nanotechnologies, a U.S. DOE, Office of Basic Energy Sciences user facility. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government.
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Presenters
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Andrew J Miller
- Sandia National Laboratories