Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-11-15
Nature Materials 2, 477 (2003)
Physics
Condensed Matter
Statistical Mechanics
16 pages, 6 figures
Scientific paper
A new class of artificial atoms, such as synthetic nanocrystals or vortices in superconductors, naturally self-assemble into ordered arrays. This property makes them applicable to the design of novel solids, and devices whose properties often depend on the response of such assemblies to the action of external forces. Here we study the transport properties of a vortex array in the Corbino disk geometry by numerical simulations. In response to an injected current in the superconductor, the global resistance associated to vortex motion exhibits sharp jumps at two threshold current values. The first corresponds to a tearing transition from rigid rotation to plastic flow, due to the reiterative nucleation around the disk center of neutral dislocation pairs that unbind and glide across the entire disk. After the second jump, we observe a smoother plastic phase proceeding from the coherent glide of a larger number of dislocations arranged into radial grain boundaries.
Miguel M.-Carmen
Zapperi Stefano
No associations
LandOfFree
Tearing transition and plastic flow in superconducting thin films does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tearing transition and plastic flow in superconducting thin films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tearing transition and plastic flow in superconducting thin films will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-629749