Flow of a Single Magnetic Vortex in a Submicron-Size Superconducting Al Disk Controlled by Radio-Frequency Currents
Atsushi Harada, Kengo Enomoto, Yamaguchi Takahide, Motoi Kimata, Taro Yakabe, Kota Kodama, Hidetaka Satsukawa, Nobuyuki Kurita, Satoshi Tsuchiya, Taichi Terashima, Shinya Uji
DOI 10.1103/PhysRevLett.107.077002 · Physical Review Letters
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Abstract
We report the first observation of a single-vortex flow in a mesoscopic superconductor. A flow of a single vortex is successfully controlled by an rf current superimposed on a dc current, evidence of which is provided by voltage steps in current-voltage (I−V) characteristics. Irrespective of the number of vortices confined to the disk, we unambiguously observe that when a single vortex inside the disk is driven out of the disk, another vortex enters the disk similarly to two balls colliding in billiards: only one vortex passes through the Al disk at the same time in mesoscopic systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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