Oded Agam to speak on ' Instability of the Abrikosov Lattice due to Nonanalytic Core Reconstruction of Vortices in Bosonic Superfluids '

On March 28 a research seminar of the  Laboratory for Condensed Matter Physics will be held at HSE. Oded Agam (Hebrew University of Jerusalem, Israel) will speak on 'Instability of the Abrikosov Lattice due to Nonanalytic Core Reconstruction of Vortices in Bosonic Superfluids'.

Abstract:

The impact of the nonanalytic reconstruction of vortex cores on static vortex structures inweakly coupled superfluids is considered. It is shown  that, in rotating two-dimensional systems, the Abrikosov vortex lattice is unstable to vortex core deformation: Each zero of the wave function becomes a cut of finite length. The directors characterizing the orientations of the cuts are themselves ordered in superstructures due either to surface effects or to interaction with shear deformations of the lattice (spiral structure). Similar instability may also be observable in clean superconducting films.

Start time: 15.00

Address: 21/4 Staraya Basmannaya ulitsa, building 5, room Б-312. 

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