Current-phase Relationship, Thermal and Quantum Phase Slips in Superconducting Nanowires made on Scaffold Created using Adhesive Tape - Condensed Matter > SuperconductivityReportar como inadecuado




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Abstract: Quantum phase slippage QPS in a superconducting nanowire is a new candidatefor developing a quantum bit. It has also been theoretically predicted that theoccurrence of QPS significantly changes the current-phase relationship CPR ofthe wire due to the tunneling between topologically different metastablestates. We present studies on the microwave response of the superconductingnanowires to reveal their CPRs. First, we demonstrate a simple nanowirefabrication technique, based on commercially available adhesive tapes, whichallows making thin superconducting wire from different metals. We compare theresistance vs. temperature curves of Mo$ {76}$Ge$ {24}$ and Al nanowires to theclassical and quantum models of phase slips. In order to describe theexperimentally observed microwave responses of these nanowires, we use theMcCumber-Stewart model, which is generalized to include either classical orquantum CPR.



Autor: Myung-Ho Bae, Robert C. Dinsmore III, Thomas Aref, Matthew Brenner, Alexey Bezryadin

Fuente: https://arxiv.org/







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