Unusual quantum magnetic-resistive oscillations in a superconducting structure of two circular asymmetric loops in series
read the original abstract
We measured both quantum oscillations of a rectified time-averaged direct voltage V_{rec}(B) and a dc voltage V_{dc}(B) as a function of normal magnetic field B, in a thin-film aluminum structure of two asymmetric circular loops in series at temperatures below the superconducting critical temperature T_{c}. The V_{rec}(B) and V_{dc}(B) voltages were observed in the structure biased only with an alternating current (without a dc component) and only with a direct current (without an ac component), respectively. The aim of the measurements was to find whether interaction (nonlinear coupling) exists between quantum magnetic-resistive states of two loops at a large distance from each other. The distance between the loop centers was by an order of magnitude longer than the Ginzburg-Landau coherence length \xi(T). At such distance, one would not expect to detect any interaction between the quantum states of the loops. But we did find such an interaction. Moreover, we found that V_{dc}(B) functions (like V_{rec}(B) ones) can be used to describe the quantum states of the loops.
This paper has not been read by Pith yet.
Forward citations
Cited by 4 Pith papers
-
Shift of the maxima of the critical currents of different polarity relative to the zero magnetic flux along the flux axis in a superconducting asymmetric aluminum ring
A model equating the temperature-dependent phase shift to the difference in kinetic inductances of wide and narrow semirings in asymmetric aluminum rings, enabled by differing critical temperatures, explains the obser...
-
Critical temperatures and critical currents of wide and narrow quasi-one-dimensional superconducting aluminum structures in zero magnetic field
Narrower quasi-1D aluminum structures exhibit lower critical temperatures and current densities than wider ones, with switching currents matching Kupriyanov-Lukichev theory at low T and Josephson SNS behavior near Tc.
-
Unusual critical currents in quasi-one-dimensional superconducting aluminum two-width structures in a magnetic field
Experimental switching currents in aluminum two-width quasi-1D structures are nonlocal and persist in high magnetic fields, radically differing from Ginzburg-Landau theory predictions and challenging known descriptions.
-
Negative nonlocal and local voltages (resistances) in a quasi-one-dimensional superconducting aluminum structure
Negative voltages observed in quasi-1D Al superconductor structure due to quasiparticle current at N-S interface, with temperature and field dependences modeled using equilibrium or nonequilibrium fluctuations.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.