title: Flow of a single magnetic vortex in a submicron-size superconducting Al disk controlled by radio-frequency currents.
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.
authors: National Institute for Materials Science, Ibaraki, Japan.
authors: Atsushi
authors: A
authors: Harada
authors: Kengo
authors: K
authors: Enomoto
authors: Yamaguchi
authors: Y
authors: Takahide
authors: Motoi
authors: M
authors: Kimata
authors: Taro
authors: T
authors: Yakabe
authors: Kota
authors: K
authors: Kodama
authors: Hidetaka
authors: H
authors: Satsukawa
authors: Nobuyuki
authors: N
authors: Kurita
authors: Satoshi
authors: S
authors: Tsuchiya
authors: Taichi
authors: T
authors: Terashima
authors: Shinya
authors: S
authors: Uji