Bernoulli potential in type-I and weak type-II superconductors: II. Surface dipole
نویسندگان
چکیده
منابع مشابه
Absence of dipole transitions in vortices of type-II superconductors.
The response of a single vortex to a time dependent field is examined microscopically and an equation of motion for vortex motion at non-zero frequencies is derived. Of interest are frequencies near ∆/EF , where ∆ is the bulk energy gap and EF is the fermi energy. The low temperature, clean, extreme type II limit and maintaining of equilibrium with the lattice are assumed. A simplification occu...
متن کاملOrdering dynamics in type-II superconductors.
We use analytic and numerical methods to analyze the dynamics of vortices following the quench of a type-II superconductor under the application of an external magnetic field. In three dimensions, in the absence of a field, the spacing between vortices scales with time t with an exponent phi=0.414+/-0.01, in a thin sheet of a superconductor, the scaling exponent is phi=0.294+/-0.01. When an ext...
متن کاملNonlocal conductivity in type-II superconductors.
Multiterminal transport measurements on YBCO crystals in the vortex liquid regime have shown nonlocal conductivity on length scales up to 50 microns. Motivated by these results we explore the wavevector (k) dependence of the dc conductivity tensor, σμν(k), in the Meissner, vortex lattice, and disordered phases of a type-II superconductor. Our results are based on time-dependent Ginzburg-Landau ...
متن کاملElectrostatics of Vortices in Type-II Superconductors.
In a type II superconductor the gap variation in the core of a vortex line induces a local charge modulation. Accounting for metallic screening, we determine the line charge of individual vortices and calculate the electric field distribution in the half space above a field penetrated superconductor. The resulting field is that of an atomic size dipole d ∼ eaBẑ, aB = h̄/me is the Bohr radius, ac...
متن کاملMagnetic relaxation in hard type-II superconductors
– Magnetic relaxation in a type-II superconductor is simulated for a range of temperatures T in a simple model of 2D Josephson junction array (JJA) with finite screening. The high-T phase, that is characterised by a single time scale τα, crosses over to an intermediate phase at a lower temperature Tcr wherein a second time scale τβ ≪τα emerges. The relaxation in the time window set by τβ follow...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2004
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.70.104518