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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The thermodynamics of low dimensional spin-1/2 Heisenberg ferromagnets (HFM)in an external magnetic field is investigated within a second-order two-timeGreen function formalism in the wide temperature and field range. A crucialpoint of the proposed scheme is a proper account of the analytical propertiesfor the approximate transverse commutator Green function obtained as a resultof the decoupling procedure. A good quantitative description of the correlationfunctions, magnetization, susceptibility, and heat capacity of the HFM on achain, square and triangular lattices is found for both infinite andfinite-sized systems. The dependences of the thermodynamic functions of 2D HFMon the cluster size are studied. The obtained results agree well with thecorresponding data found by Bethe ansatz, exact diagonalization, hightemperature series expansions, and quantum Monte Carlo simulations.

Thermodynamics of low dimensional spin-1/2 Heisenberg ferromagnets in an external magnetic field within Green function formalism