Harvard Condensed Matter Theory Seminars
Abstract
Cynthia Reichhardt, Los Alamos National Laboratory
- Local probes at the nanoscale: Entanglement, melting, and jamming transitions
- Driving a single particle through a system offers a powerful experimental
probe of the nonequilibrium dynamics of a nanoscale medium. Due to recent
technical advances, magnetic force microscopy (MFM) can be used to manipulate
individual magnetic vortices in a superconductor. We propose an experiment
to resolve the controversial issue of whether vortices can entangle like
polymers by using an MFM tip to wind one vortex around another and create
an artificially entangled vortex state. We also use simulations of local
probes to explore other phenomena, including local melting transitions,
diverging length scales at jamming transitions, and nonequilibrium ordering
transitions.
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