English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Monte Carlo simulations of the frustrated 2D XY model were carried out atsmall commensurate values of the frustration $f$. For $f=1/30$ a singletransition was observed at which phase coherence (finite helicity modulus) andvortex lattice orientational order vanish together. For $f=1/56$ a new phase inwhich phase coherence is absent but orientational order persists was observed.Where comparison is possible, the results are in detailed agreement with thebehavior of the lattice Coulomb gas model of vortices. It is argued that thehelicity modulus of the frustrated 2D XY model vanishes for any finitetemperature in the limit of weak frustration $f$.Comment: 4 pages, RevTeX, 3 figures in separate uuencoded file The manuscript  will appear in Phys. Rev.

Flux-lattice melting and depinning in the weakly frustrated two-dimensionalXYmodel