Cross-sections of Andreev scattering by quantized vortex rings in 3He-B

N. Suramlishvili, A. W. Baggaley, C. F. Barenghi, and Y. A. Sergeev
Phys. Rev. B 85, 174526 – Published 25 May 2012

Abstract

We studied numerically the Andreev scattering cross-sections of three-dimensional isolated quantized vortex rings in superfluid 3He-B at ultralow temperatures. We calculated the dependence of the cross-section on the ring's size and on the angle between the beam of incident thermal quasiparticle excitations and the direction of the ring's motion. We also introduced, and investigated numerically, the cross-section averaged over all possible orientations of the vortex ring; such a cross-section may be particularly relevant for the analysis of experimental data. We also analyzed the rôle of screening effects for Andreev reflection of quasiparticles by systems of vortex rings. Using the results obtained for isolated rings we found that the screening factor for a system of unlinked rings depends strongly on the average radius of the vortex ring, and that the screening effects increase with decreasing the rings' size.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
1 More
  • Received 14 February 2012

DOI:https://doi.org/10.1103/PhysRevB.85.174526

©2012 American Physical Society

Authors & Affiliations

N. Suramlishvili1, A. W. Baggaley1, C. F. Barenghi1, and Y. A. Sergeev2

  • 1School of Mathematics and Statistics, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK
  • 2School of Mechanical and Systems Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 85, Iss. 17 — 1 May 2012

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×