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Title: Tunable and enhanced Rashba spin-orbit coupling in iridate-manganite heterostructures
Authors: T. S. Suraj
Ganesh Ji Omar 
Hariom Jani 
M. M. Juvaid 
Sonu Hooda
Anindita Chaudhuri 
Andrivo Rusydi 
K. Sethupathi
Thirumalai Venkatesan:rp04303 
Ariando Ariando 
M. S. Ramachandra Rao
Keywords: Magnetoresistance
Rashba coupling
Spin relaxation
Spin-orbit coupling
Issue Date: 25-Sep-2020
Publisher: American Physical Society
Citation: T. S. Suraj, Ganesh Ji Omar, Hariom Jani, M. M. Juvaid, Sonu Hooda, Anindita Chaudhuri, Andrivo Rusydi, K. Sethupathi, Thirumalai Venkatesan:rp04303, Ariando Ariando, M. S. Ramachandra Rao (2020-09-25). Tunable and enhanced Rashba spin-orbit coupling in iridate-manganite heterostructures. Physical Review B 102 (12) : 125145. ScholarBank@NUS Repository.
Abstract: Tailoring spin-orbit interactions and Coulomb repulsion are the key features to observe exotic physical phenomena such as magnetic anisotropy and topological spin texture at oxide interfaces. Our study proposes a platform for engineering magnetism and spin-orbit coupling at theÿLaMnO3/SrIrO3ÿ(3d?5d)ÿoxide interface by tuning theÿLaMnO3ÿgrowth conditions, which controls the lattice displacement and spin-correlated interfacial coupling through charge transfer. We report a tunable and enhanced interface-induced Rashba spin-orbit coupling where the spin relaxation mechanism varies with magnetic behavior of the underlyingÿLaMnO3ÿlayer. The x-ray spectroscopy measurements reveal the quantitative valence states of Mn and their impact on charge transfer. Our angle-dependent magnetoresistance measurements also reflects the signature of magnetic proximity effect inÿSrIrO3ÿand can be tuned with the magnetic nature ofÿLaMnO3ÿin aÿLaMnO3/SrIrO3ÿbilayer. Our work demonstrates a route to engineer the interface-induced Rashba spin-orbit coupling and magnetic proximity effect at theÿ3d?5dÿoxide interface for spintronics applications.
Source Title: Physical Review B
ISSN: 24699969
DOI: 10.1103/PhysRevB.102.125145
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