2018/03/01 by V. G. Kogan · 13 citations
Physics and Astronomy · #Classical mechanics #Condensed matter physics #Core (optical fiber) #Dissipation #Dissipative system #Lattice (music) #Mechanics #Optics #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Quantum, superfluid, helium dynamics #Vector field #Vortex #Vorticity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.97.094510
published in Physical review. B./Physical review. B 97(9) (American Physical Society) · 6 pages, 5 figures
arxiv created 2018/03/01 · openalex publication_date 2018/03/19 · arxiv updated 2018/03/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The dissipative currents due to normal excitations are included in the London description. The resulting time-dependent London equations are solved for a moving vortex and a moving vortex lattice. It is shown that the field distribution of a moving vortex loses its cylindrical symmetry. It experiences contraction that is stronger in the direction of the motion than in the direction normal to the velocity \mathbitv. The London contribution of normal currents to dissipation is small relative to the Bardeen-Stephen core dissipation at small velocities, but it approaches the latter at high velocities, where this contribution is no longer proportional to v2. To minimize the London contribution to dissipation, the vortex lattice is oriented so as to have one of the unit cell vectors along the velocity. This effect is seen in experiments and predicted within the time-dependent Ginzburg-Landau theory.