Direct spatial imaging of vortices in a superconducting wire network


Journal Article

We report direct observations of vortices in a square superconducting wire grid imaged using scanning Hall probe microscopy. Real space images of vortex configurations are obtained as a function of the flux per unit cell f by measuring the local magnetic field just above the sample. At f=1/2 we observe domains of the checkerboard ground state. As f is reduced from 1/2 to 1/3 vacancies first penerate the grain boundaries and then the checkerboard domains. Near f=1/3 we observe domains of the 1/3 staircase ground state. Heating the sample close to Tc produces correlated vortex hopping. © 1993 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Hallen, HD; Seshadri, R; Chang, AM; Miller, RE; Pfeiffer, LN; West, KW; Murray, CA; Hess, HF

Published Date

  • January 1, 1993

Published In

Volume / Issue

  • 71 / 18

Start / End Page

  • 3007 - 3010

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.71.3007

Citation Source

  • Scopus