Advanced first-principles calculations uncover the emergence of multiferroicity in antiferromagnetic Pr0.5Ca0.5MnO3 upon structural transition to a low-symmetry electrically polarized structure, found to be the ground state according to total energy. The electric polarization is not axial but lies in the basal plane. It is due to the combination of magnetic ordering with two byproducts of the oxygen-rotation-driven structural transformation: a polar ferroelectric mode in the chain-parallel direction and a change in orbital ordering orthogonally to the chains.

Multiferroicity and orbital ordering in Pr0.5Ca0.5MnO3 from first principles

FILIPPETTI, ALESSIO;FIORENTINI, VINCENZO
2010-01-01

Abstract

Advanced first-principles calculations uncover the emergence of multiferroicity in antiferromagnetic Pr0.5Ca0.5MnO3 upon structural transition to a low-symmetry electrically polarized structure, found to be the ground state according to total energy. The electric polarization is not axial but lies in the basal plane. It is due to the combination of magnetic ordering with two byproducts of the oxygen-rotation-driven structural transformation: a polar ferroelectric mode in the chain-parallel direction and a change in orbital ordering orthogonally to the chains.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/40320
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 14
social impact