Quantum phase slips in superconducting loops threaded by an external magnetic field provide a coupling between macroscopic quantum states with supercurrents circulating in opposite directions. We analyze the dynamics of the phase slips as a function of the superconducting loop length, from fully coherent dynamics for short loops to dissipative dynamics for the long ones. For intermediate length...

Bolometric Response of Superconducting Microbridges and Single-Walled Carbon Nanotubes Daniel Ferguson Santavicca 2009 A bolometer is a device that uses a temperature-dependent resistance to detect power. The strongly temperature-dependent resistance of a superconductor biased on its superconducting phase transition can be used to make an extremely sensitive bolometric detector. We have develop...

In this Letter we study the effect of time-reversal symmetric impurities on the Josephson supercurrent through two-dimensional helical metals such as on a topological insulator surface state. We show that, contrary to the usual superconducting-normal metal-superconducting junctions, the suppression of the supercurrent in the superconducting-helical metal-superconducting junction is mainly due t...

The lack of space inversion symmetry endows non-centrosymmetric superconducting materials with various interesting parity-breaking phenomena, including the anomalous Josephson effect. Our paper considers a junction two superconductors connected by uniaxial ferromagnet. We show that this “Chiral Magnetic junction” (CMJ junction) exhibits direct analog Chiral Effect, which has already been observ...

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Abstract. Non-equilibrium phenomena in superconductors have attracted much attention since the first experiments on charge imbalance in the early 1970’s. Nowadays a new promising line of research lies at an intersection between superconductivity and spintronics. Here we develop a quasiclassical theory of a single junction between a normal metal and a superconductor with a spin-active interface ...

We present the results from an experimental study of the magnetotransport of superconducting wires of amorphous indium-oxide having widths in the range 40-120 nm. We find that, below the superconducting transition temperature, the wires exhibit clear, reproducible, oscillations in their resistance as a function of magnetic field. The oscillations are reminiscent of those that underlie the opera...

With the goal of understanding the intricate behavior and dynamics of collections of neurons, we present superconducting circuits containing Josephson junctions that model biologically realistic neurons. These "Josephson junction neurons" reproduce many characteristic behaviors of biological neurons such as action potentials, refractory periods, and firing thresholds. They can be coupled togeth...

Group and developing high − T C Superconducting Nanowire Single Photon Detectors for deep space communication. He has been a Fulbright Scholar and received national and international fellowships & awards for this study. During his Ph.D. studies, he has worked on Superconducting Quantum Interference Device Chains and demonstrated the existence of localized quantum phase-slips which are crucial f...

In spite of the rather large investment in research in superconducting electronics in the U.S. and Japan and elsewhere, there has been remarkably little payoff in terms of practical applications. By "practical applications" I mean products which are used by others outside the superconducting electronics community for their own purposes, without a primary interest in how the superconducting devi...