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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

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.

Original languageEnglish
Article number077002
JournalPhysical Review Letters
Volume107
Issue number7
DOIs
Publication statusPublished - 2011 Aug 9
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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