Polarity and Spin-Orbit Coupling Induced Strong Interfacial Exchange Coupling: An Asymmetric Charge Transfer in Iridate-Manganite Heterostructure

Yu, Tao1,5,6; Deng, Bei1; Zhou, Liang1; Chen, Pingbo1; Liu, Qiying1; Wang, Cailin1; Ning, Xingkun2; Zhou, Jingtian3,4; Bian, Zhiping3,4; Luo, Zhenlin3,4; Qiu, Chunyin5,6; Shi, Xing-Qiang1; He, Hongtao1

2019-11-27

10.1021/acsami.9b14641

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Charge transfer is of particular importance in manipulating the interface physics in transition-metal oxide heterostructures. In this work, we have fabricated epitaxial bilayers composed of polar 3d LaMnO3 and nonpolar Sd SrIrO3. Systematic magnetic measurements reveal an unexpectedly large exchange bias effect in the bilayer, together with a dramatic enhancement of the coercivity of LaMnO3. Based on first-principle calculations and X-ray absorption spectroscopy measurements, such a strong interfacial magnetic coupling is found closely associated with the polar nature of LaMnO3 and the strong spin-orbit interaction in SrIrO3, which collectively drive an asymmetric interfacial charge transfer and lead to the emergence of an interfacial reentrant spin/superspin glass state. Our study provides a new insight into the charge transfer in transition-metal oxide heterostructures and offers a novel means to tune the interfacial exchange coupling for a variety of device applications.

interfacial magnetic coupling charge transfer spin-orbit coupling molecular orbital coupling polarity discontinuity

SCI ; EI

英语

第一 ; 通讯

Technology and Innovation Commission of Shenzhen Municipality[KQJSCX20170727090712763] ; Technology and Innovation Commission of Shenzhen Municipality[JCYJ20170817105007999]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000500415700111

AMER CHEMICAL SOC

20194707710209

Exchange coupling ; Iridium compounds ; Lanthanum compounds ; Magnetic couplings ; Magnetic polarity ; Magnetism ; Manganese compounds ; Manganites ; Molecular orbitals ; Spin glass ; Strontium compounds ; Transition metal oxides ; Transition metals ; X ray absorption spectroscopy

Metallurgy and Metallography:531 ; Mechanical Drives and Transmissions:602 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Atomic and Molecular Physics:931.3

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
2.Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China
3.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China
4.Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China
5.Wuhan Univ, Key Lab Artificial Micro & Nanostruct, Minist Educ, Wuhan 430072, Hubei, Peoples R China
6.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

Yu, Tao,Deng, Bei,Zhou, Liang,et al. Polarity and Spin-Orbit Coupling Induced Strong Interfacial Exchange Coupling: An Asymmetric Charge Transfer in Iridate-Manganite Heterostructure[J]. ACS Applied Materials & Interfaces,2019,11(47):44837-44843.

Yu, Tao.,Deng, Bei.,Zhou, Liang.,Chen, Pingbo.,Liu, Qiying.,...&He, Hongtao.(2019).Polarity and Spin-Orbit Coupling Induced Strong Interfacial Exchange Coupling: An Asymmetric Charge Transfer in Iridate-Manganite Heterostructure.ACS Applied Materials & Interfaces,11(47),44837-44843.

Yu, Tao,et al."Polarity and Spin-Orbit Coupling Induced Strong Interfacial Exchange Coupling: An Asymmetric Charge Transfer in Iridate-Manganite Heterostructure".ACS Applied Materials & Interfaces 11.47(2019):44837-44843.