Dynamic response and ordering of rotating vortices in superconducting Corbino disks

S. Okuma; Y. Yamazaki; N. Kokubo

doi:10.1103/PhysRevB.80.220501

← Back to search

Dynamic response and ordering of rotating vortices in superconducting Corbino disks

S. Okuma, Y. Yamazaki, N. Kokubo

DOI 10.1103/PhysRevB.80.220501 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We study the dynamic response of weakly disordered vortex lattice driven by a radial current I in amorphous superconducting films with a Corbino geometry, where vortices rotate around the center of the sample by a frustrated Lorentz force inversely proportional to the radius. With increasing I, the vortices near the center are first depinned, indicative of the plastic-flow-like rotation, which gradually approaches a laminarlike flow at large I. We observe a mode-locking resonance, which suggests the formation of rotating vortex rings composed of triangular-lattice arrays. The field evolution of the resonance shows the presence of the lattice rotation of the driven vortex rings with respect to the flow direction.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
MoxGe1-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	6.3	Pressure not reported	onset
MoxGe1-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	6.2	Pressure not reported	zero_resistance
YBCO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown