6533b85ffe1ef96bd12c118d

RESEARCH PRODUCT

Large diamagnetic persistent currents

M. ManninenAshim Kumar RoySheelan Sengupta ChowdhuryP. Singha Deo

subject

PhysicsCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsScatteringGeneral Physics and AstronomyFOS: Physical sciencesPersistent currentCondensed Matter::Mesoscopic Systems and Quantum Hall EffectImpurityCondensed Matter::SuperconductivityMesoscale and Nanoscale Physics (cond-mat.mes-hall)DiamagnetismPhysics::Atomic PhysicsComputer Science::Databases

description

In multichannel rings, evanescent modes will always co-exist with propagating modes. The evanescent modes can carry a very large diamagnetic persistent current that can oscillate with energy and are very sensitive to impurity scattering. This provides a natural explanation for the large diamagnetic persistent currents observed in experiments.

https://dx.doi.org/10.48550/arxiv.0710.1235