Dilation of the Giant Vortex State in a Mesoscopic Superconducting Loop

Abstract

We have experimentally investigated the magnetisation of a mesoseopie aluminum loop at temperatures well below the superconducting transition temperature T(c). The flux quantisation of the superconducting loop was investigated by a mu-Hall magnetometer in magnetic intensities beween +/- 100 Gauss. The magnetic intensity periodicity observed in the magnetisation measurements corresponds to integer values of the supereonducting flux quantum Phi(0) = h-bar/2e. A closer inspection of the periodicity however reveal a systematic variation of the magnetic intensity periodicity. These variations we interpret as a consequence of a giant vortex state nucleating on either the inner or the outer side off the loop.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2001
Accession Number
ADP013304

Entities

People

  • C. B. Soerensen
  • G. R. Kofod
  • J. C. Hollingbery
  • P. E. Lindelof
  • S. Pedersen

Organizations

  • University of Copenhagen

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Electron Beam Lithography
  • Electron Density
  • Electron Gas
  • Electron Microscopes
  • Electrons
  • Equations
  • Intensity
  • Magnetization
  • Magnetometers
  • Measurement
  • Metastable State
  • Phase Transformations
  • Scanning Electron Microscopes
  • Technical Information Centers
  • Transition Temperature
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Superconducting Magnet Technology

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Dots