Accession Number:

ADA561057

Title:

AC Current Driven Dynamic Vortex State in YBa2Cu3O7-x (Postprint)

Descriptive Note:

Journal article

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIR/POWER DIV/MECHANICAL ENERGY CONVERSION BRANCH

Personal Author(s):

• Lucarelli, A.
• Frey, A.
• Yang, R.
• Lupke, G.
• Grilli, F.
• Haugan, T.
• Levin, G.
• Barnes, P.

Report Date:

2012-02-01

Pagination or Media Count:

6.0

Abstract:

Time-resolved magneto-optical imaging measurements show that an ac current enables the vortex matter in YBa2Cu3O7-x thin films to reorganize into two coexisting steady states of driven vortex motion with different characteristics a quasi-static disordered glassy state in the sample interior and a dynamic state of plastic motion near the edges. Finite element calculations consistent with the critical state model show good agreement with the measured field profiles in the quasi-static state but predict a larger hysteretic behavior in the dynamic state.

Descriptors:

• *ALTERNATING CURRENT
• EDGES
• HYSTERESIS
• MAGNETIC FIELDS
• MAGNETOOPTICS
• MODELS
• REPRINTS
• SUPERCONDUCTORS
• THIN FILMS
• YTTRIUM BARIUM COPPER OXIDES

Subject Categories:

• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE