Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-06-15
Phys. Rev B 82, 024523 (2010)
Physics
Condensed Matter
Quantum Gases
Ten pages, including figures
Scientific paper
We study the occurrence of non-classical rotational inertia (NCRI) arising from superfluidity along grain boundaries in a two-dimensional bosonic system. We make use of a standard mapping between the zero-temperature properties of this system and the statistical mechanics of interacting vortex lines in the mixed phase of a type-II superconductor. In the mapping, the liquid phase of the vortex system corresponds to the superfluid bosonic phase. We consider numerically obtained polycrystalline configurations of the vortex lines in which the microcrystals are separated by liquid-like grain boundary regions which widen as the vortex system temperature increases. The NCRI of the corresponding zero-temperature bosonic systems can then be numerically evaluated by solving the equations of superfluid hydrodynamics in the channels near the grain boundaries. We find that the NCRI increases very abruptly as the liquid regions in the vortex system (equivalently, superfluid regions in the bosonic system) form a connected, system-spannig structure with one or more closed loops. The implications of these results for experimentally observed supersolid phenomena are discussed.
Dasgupta Chandan
Valls Oriol T.
No associations
LandOfFree
Non-classical Rotational Inertia in a Two-dimensional Bosonic Solid Containing Grain Boundaries 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 Non-classical Rotational Inertia in a Two-dimensional Bosonic Solid Containing Grain Boundaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-classical Rotational Inertia in a Two-dimensional Bosonic Solid Containing Grain Boundaries will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-105603