Bulk-Rashba Effect with Suppressed Spin Relaxation in a Polar Phase of Bi1- xIn1+ xO3

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 39 vom: 07. Okt., Seite e2504684
1. Verfasser:	Kang, Deokyoung (VerfasserIn)
Weitere Verfasser:	Lu, Xue-Zeng, Acharya, Megha, Husain, Sajid, Harris, Isaac, Behera, Piush, Lin, Ching-Che, Banyas, Ella, Smith, Alex, Ricci, Francesco, Zhu, Menglin, Denzer, Bridget R, Terlier, Tanguy, Wang, Shu, Kim, Tae Yeon, Caretta, Lucas, Natelson, Douglas, LeBeau, James M, Neaton, Jeffrey B, Ramesh, Ramamoorthy, Rondinelli, James M, Martin, Lane W
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2025
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article Rashba coupling density functional theory epitaxy magnetotransport spintronics

Beschreibung
Zusammenfassung:	© 2025 Wiley‐VCH GmbH. The Rashba effect enables control over the spin degree of freedom, particularly in polar materials where the polar symmetry couples to Rashba-type spin splitting. The exploration of this effect, however, has been hindered by the scarcity of polar materials exhibiting the bulk-Rashba effect and rapid spin-relaxation effects dictated by the D'yakonov-Perel mechanism. Here, a polar LiNbO3-type R3c phase of Bi1- xIn1+ xO3 with x ≈0.15-0.24 is stabilized via epitaxial growth, which exhibits a bulk-Rashba effect with suppressed spin relaxation as a result of its unidirectional spin texture. As compared to the previously observed non-polar Pnma phase, this polar phase exhibits higher conductivity, reduced bandgap, and enhanced dielectric and piezoelectric responses. Combining first-principles calculations and multimodal magnetotransport measurements, which reveal weak (anti)localization, anisotropic magnetoresistance, planar-Hall effect, and nonreciprocal charge transport, a bulk-Rashba effect without rapid spin relaxation is demonstrated. These findings offer insights into spin-orbit coupling physics within polar oxides and suggest potential spintronic applications
Beschreibung:	Date Revised 08.10.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202504684