Article (Scientific journals)
Rationalizing and engineering Rashba spin-splitting in ferroelectric oxides
Djani-Ait, Hania; García Castro, Andrès Camilo; Tong, Wenyi et al.
2019In npj Quantum Materials, 4, p. 51
Peer Reviewed verified by ORBi
 

Files


Full Text
npjQuantumMater_4_p51_2019_Rashba_FE__Hania.pdf
Publisher postprint (2.67 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Ferroelectric; Rashba; spintronic
Abstract :
[en] Ferroelectric Rashba semiconductors (FERSC), in which Rashba spin-splitting can be controlled and reversed by an electric field, have recently emerged as a new class of functional materials useful for spintronic applications. The development of concrete devices based on such materials is, however, still hampered by the lack of robust FERSC compounds. Here, we show that the coexistence of large spontaneous polarization and sizeable spin–orbit coupling is not sufficient to have strong Rashba effects and clarify why simple ferroelectric oxide perovskites with transition metal at the B-site are typically not suitable FERSC candidates. By rationalizing how this limitation can be by-passed through band engineering of the electronic structure in layered perovskites, we identify the Bi2WO6 Aurivillius crystal as a robust ferroelectric with large and reversible Rashba spin-splitting, that can even be substantially doped without losing its ferroelectric properties. Importantly, we highlight that a unidirectional spin–orbit field arises in layered Bi2WO6, resulting in a protection against spin-decoherence.
Research center :
PhyTheMa
Disciplines :
Physics
Author, co-author :
Djani-Ait, Hania ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
García Castro, Andrès Camilo ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Tong, Wenyi ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Barone, Paolo;  Consiglio Nazionale delle Ricerche (CNR-SPIN)
Bousquet, Eric  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Picozzi, Silvia;  Consiglio Nazionale delle Ricerche (CNR-SPIN)
Ghosez, Philippe  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Language :
English
Title :
Rationalizing and engineering Rashba spin-splitting in ferroelectric oxides
Publication date :
2019
Journal title :
npj Quantum Materials
eISSN :
2397-4648
Publisher :
Nature Publishing Group, London, United Kingdom
Volume :
4
Pages :
51
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
Tier-1 supercomputer
Funders :
Consortium des Equipements de Calcul Intensif (CECI), funded by the F.R.S.-FNRS under the Grant No. 2.5020.11 and theTier-1 supercomputer of the Fédération Wallonie-Bruxelles funded by the Walloon Region under the Grant No. 1117545.
CÉCI - Consortium des Équipements de Calcul Intensif [BE]
Tier-1
Available on ORBi :
since 16 January 2020

Statistics


Number of views
77 (4 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
59
Scopus citations®
without self-citations
50
OpenCitations
 
46

Bibliography


Similar publications



Contact ORBi