6533b855fe1ef96bd12b14cb
RESEARCH PRODUCT
Field dependence of the vortex-core sizes in dirty two-band superconductors
Mikhail SilaevArtjom Varguninsubject
suprajohtavuusmultiband superconductivityFOS: Physical sciences02 engineering and technology01 natural sciencessuprajohteetSuperconductivity (cond-mat.supr-con)disordered systemsCondensed Matter::Superconductivity0103 physical sciences010306 general physicsCritical fieldPhysicsSuperconductivityCondensed matter physicsCondensed Matter - Superconductivityvortices in superconductors021001 nanoscience & nanotechnologycoherence lengthMagnetic fieldVortexScattering ratePairingDensity of statesQuasiparticle0210 nano-technologydescription
We study the structure of Abrikosov vortices in two-band superconductors for different external magnetic fields and different parameters of the bands. The vortex core size determined by the coherence lengths are found to have qualitatively different behaviour from that determined by the quasiparticle density of states spatial variation. These different vortex core length scales coincide near the upper critical field, while the discrepancy between them becomes quite significant at lower fields. Within the diffusive approximation we demonstrate several generic regimes in the field dependence of the vortex core sizes determined by the disparity of diffusion constants in the two bands.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-03-29 |