Change search
ReferencesLink to record
Permanent link

Direct link
First-order phase transition and tricritical point in multiband U(1) London superconductors
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Statistical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Statistical Physics.
2016 (English)In: PHYSICAL REVIEW B, ISSN 2469-9950, Vol. 93, no 5, 054524Article in journal (Refereed) PublishedText
Abstract [en]

The order of the superconducting phase transition is a classical problem. Single-component type-2 superconductors exhibit a continuous "inverted-XY" phase transition, as was first demonstrated for U(1) lattice London superconductors by a celebrated duality mapping with subsequent backing by numerical simulations. Here we study this problem in multiband U(1) London superconductors and find evidence that by contrast the model has a tricritical point. The superconducting phase transition becomes first order when the Josephson length is sufficiently large compared to the magnetic field penetration length. We present evidence that the fluctuation-induced dipolar interaction between vortex loops makes the phase transition discontinuous. We discuss that this mechanism is also relevant for the phase transitions in multicomponent gauge theories with higher broken symmetry.

Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 93, no 5, 054524
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-184967DOI: 10.1103/PhysRevB.93.054524ISI: 000371391800006ScopusID: 2-s2.0-84960157429OAI: oai:DiVA.org:kth-184967DiVA: diva2:917805
Note

QC 20160407

Available from: 2016-04-07 Created: 2016-04-07 Last updated: 2016-04-07Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Sellin, Karl A. H.Babaev, Egor
By organisation
Statistical Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 20 hits
ReferencesLink to record
Permanent link

Direct link