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

Hybrid organic-inorganic perovskites are famous for the diversity of theirchemical compositions, phases and phase transitions, and associated physicalproperties. We use a combination of experimental and computational techniquesto reveal strong coupling between structure, magnetism, and spin splitting in arepresentative of the largest family of hybrid organic-inorganic perovskites:the formates. With the help of first-principles simulations, we find spinsplitting in both conduction and valence bands of [NH$_2$NH$_3$]Co(HCOO)$_3$,induced by spin-orbit interactions, which can reach up to 14~meV. Our magneticmeasurements reveal that this material exhibits canted antiferromagnetism below15.5 K. The direction of the associated antiferromagnetic order parameter isstrongly coupled with the spin splitting already in the centrosymmetric phase,allowing for the creation and annihilation of spin splitting through theapplication of a magnetic field. Furthermore, the structural phase transitioninto experimentally observed polar Pna2$_1$ phase completely changes theaforementioned spin splitting and its coupling to magnetic degrees of freedom.This reveals that in [NH$_2$NH$_3$]Co(HCOO)$_3$, the structure and magnetismare strongly coupled to spin splitting in a way that allows for itsmanipulation through both magnetic and electric fields. As an example, for agiven point inside the Brillouin zone of centrosymmetric Pnma phase of[NH$_2$NH$_3$]Co(HCOO)$_3$, spin splitting can be turned on/off by aligning theantiferromagnetic vector along certain crystallographic directions or throughinducing a polar phase by the application of an electric field. We believe thatour findings offer an important step toward fundamental understanding andpractical applications of materials with coupled properties.

Coupling of structure and magnetism to spin splitting in hybrid organic-inorganic perovskites