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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

A theory for the phase stability of incommensurable spin structures on the /001/ surfaces of the rock-salt--structure antiferromagnetic semiconductors is presented. The theory is based on classical spins and a simple Heisenberg Hamiltonian dependent on three exchange interactions: (a) a surface-only nearest-neighbor exchange; (b) a surface second-layer nearest-neighbor exchange; and (c) an antiferromagnetic second-nearest-neighbor superexchange throughout the crystal. Incommensurable magnetic surface structures are proven to be the ground state for a considerable range of the surface exchange parameters. The properties of the ''frozen'' spin waves used in the variational calculation are fully explored, and the implications for low-energy electron diffraction studies of the rock-salt--structure antiferromagnets are discussed.

Theoretical phase stability of incommensurable spin structures on the {001} surfaces of MnO-type antiferromagnetic semiconductors