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 phantom helix states are a special set of degenerate eigenstates of theXXZ Heisenberg model, which lie in the energy levels around zero energy and arebidirectionally equal. In this work, we study the helix state in the XXZHeisenberg model with the Dzyaloshinskii-Moriya interaction (DMI). We showexactly that only the helix states in one direction remain unchanged in thepresence of resonant DMI. Based on the Holstein--Primakoff (HP) transformation,the quantum spin model is mapped to a boson model, which allows us tounderstand the underlying mechanism. Furthermore, it also indicates that suchphantom states can be separated from the spectrum by the strong DMI to enhancethe robustness of the states. We demonstrate the dynamic formation processes ofunidirectional phantom helix states by numerical simulations. The resultsindicate that the DMI as expected acts as a filter with high efficiency.

Robust unidirectional phantom helix states in the XXZ Heisenberg model with Dzyaloshinskii-Moriya interaction