Radio-Frequency Oscillations in Two-Dimensional Superconducting In−InOx: A Possible Evidence for Vortex Density Waves

S. E. Hebboul; D. P. Johnson; M. Rokhlin

doi:10.1103/PhysRevLett.82.831

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Radio-Frequency Oscillations in Two-Dimensional Superconducting In−InOx: A Possible Evidence for Vortex Density Waves

S. E. Hebboul, D. P. Johnson, M. Rokhlin

DOI 10.1103/PhysRevLett.82.831 · Physical Review Letters

T1

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Abstract

Large-amplitude radio-frequency oscillations were discovered in high sheet-resistance indium–indium-oxide films that carry nonuniform currents below the zero-field superconducting transition. The sample geometry consists of a line that is oriented perpendicular to current flow inside a rectangular section of the film. As the dc current increases above a threshold, the voltage spectrum displays several peaks which grow and shift toward higher frequencies. The effect is attributed to wave excitations in the density of current-depaired vortices and antivortices near the line tip.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
In-InOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.5	Pressure not reported	onset
In-InOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.2	Pressure not reported	onset
NbTi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown