Publication

Electrodynamics of a Superconductor Superlattice in the Mixed State

Alexander Tagantsev
1993
Journal Articles

Résumé

We study the electrodynamics of a superconductor superlattice consisting of layers of two kinds (wide layers with extremely weak pinning and very thin layers with-strong pinning), in a perpendicular magnetic field. The problem is treated with the nonlocality of the intervortex interaction and the Abrikosov-vortex elasticity simultaneously taken into account. The exact solution obtained for the surface impedance reveals a rather unusual behavior: By contrast with the monotonic dc magnetic-field dependence of the surface resistance rho(s) for a homogeneous superconductor, this dependence is non-monotonic monotonic (rho(s) is-proportional-to B for B almost-equal-to H(c1) and rho(s) is-proportional-to B-1/4 for B much greater than H(c1)) for the superconductor superlattice under study.

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https://infoscience.epfl.ch/entities/publication/4c7dc8b4-1bc1-48d6-bff4-533d5706cc53

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Alexander Tagantsev
1993
Journal Articles

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/4c7dc8b4-1bc1-48d6-bff4-533d5706cc53

À propos de ce résultat

Concepts associés (32)

Mixed-member proportional representation

Mixed-member proportional representation (MMP or MMPR) is a mixed electoral system in which votes are cast for both local elections and also for overall party vote tallies, which are used to allocate additional members to produce or deepen overall proportional representation. In some MMP systems, voters get two votes: one to decide the representative for their single-seat constituency, and one for a political party. In Denmark and others, the single vote cast by the voter is used for both the local election (in a multi-member or single-seat district), and for the overall top-up.

Proportional representation

Proportional representation (PR) refers to a type of electoral system under which subgroups of an electorate are reflected proportionately in the elected body. The concept applies mainly to political divisions (political parties) among voters. The essence of such systems is that all votes cast - or almost all votes cast - contribute to the result and are effectively used to help elect someone - not just a bare plurality or (exclusively) the majority - and that the system produces mixed, balanced representation reflecting how votes are cast.

Twistronics

Twistronics (from twist and electronics) is the study of how the angle (the twist) between layers of two-dimensional materials can change their electrical properties. Materials such as bilayer graphene have been shown to have vastly different electronic behavior, ranging from non-conductive to superconductive, that depends sensitively on the angle between the layers. The term was first introduced by the research group of Efthimios Kaxiras at Harvard University in their theoretical treatment of graphene superlattices.

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Publications associées (13)

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Electrodynamics of a Superconductor Superlattice in the Mixed State

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Nonreciprocity and High-Frequency Dynamics in Curved and Chiral Superconducting and Ferromagnetic Nanostructures

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Advanced SQUID-on-lever scanning probe for high-sensitivity magnetic microscopy with sub-100-nm spatial resolution