Proximity-Induced Magnetism in a Topological Insulator/Half-Metallic Ferromagnetic Thin Film Heterostructure
Source abstract
Abstract
Topological insulator (TI) Bi2Se3 thin films were prepared on half-metallic ferromagnetic La0.7Sr0.3MnO3 thin film by magnetron sputtering, forming a TI/FM heterostructure. The conductivity of Bi2Se3was modified by La0.7Sr0.3MnO3 at high- and low-temperature regions via different mechanisms, which could be explained by the short-range interactions and long-range interaction between ferromagnetic insulator and Bi2Se3 due to the proximity effect. Magnetic and transport measurements prove that the ferromagnetic phase and extra magnetic moment are induced in Bi2Se3 films. The weak anti-localized (WAL) effect was suppressed in Bi2Se3 films, accounting for the magnetism of La0.7Sr0.3MnO3 layers. This work clarifies the special behavior in Bi2Se3/La0.7Sr0.3MnO3 heterojunctions, which provides an effective way to study the magnetic proximity effect of the ferromagnetic phase in topological insulators.
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Research context
OpenAlex topics: Topological Materials and Phenomena · Advanced Condensed Matter Physics · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics and Astronomy, China West Normal University, Nanchong 637002, China
Superconductor and New Energy R&D Center (SRDC), Southwest Jiaotong University, Chengdu 610031, China
College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China
Funding
National Natural Science Foundation of China · Fund Project of the Ministry of Education of China
References (59)
Show source-provided references
1. Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface10.1038/nphys1274 ↗
2. Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator10.1126/science.1234414 ↗
3. The quantum spin Hall effect and topological insulators10.1063/1.3293411 ↗
4. The coexistence of superconductivity and topological order in the Bi2Se3 thin films10.1126/science.1216466 ↗
5. Breaking time reversal symmetry in topological insulators10.1557/mrs.2014.195 ↗
6. Magnetic proximity effect and interlayer exchange coupling of ferromagnetic/topological insulator/ferromagnetic trilayer10.1103/PhysRevB.91.014427 ↗
7. Weak localization effect in topological insulator micro flakes grown on insulating ferrimagnet BaFe12O1910.1038/srep21334 ↗
8. Magnetic quantum phase transition in Cr-doped Bi2(SexTe1−x)3 driven by the Stark effect10.1038/nnano.2017.149 ↗
9. Exchange-Coupling-Induced Symmetry Breaking in Topological Insulators10.1103/PhysRevLett.110.186807 ↗
10. Anomalous second ferromagnetic phase transition in Co0.08Bi1.92Se3 topological insulator10.1016/j.jallcom.2016.04.023 ↗
11. Emerging Weak Localization Effects on Topological Insulator-Insulating Ferromagnet Bi2Se3-EuS Interface10.1103/PhysRevB.88.081407 ↗
12. Evidence for ferromagnetic coupling at the doped topological insulator/ferrimagnetic insulator interface10.1063/1.4943157 ↗
13. Prediction of reentering and switching ferromagnet/antiferromagnet exchange bias by antiferromagnetic proximity effect10.1088/1361-6528/aaea27 ↗
14. Proximity Induced Time-Reversal Topological Superconductivity in Bi2Se3 Films without Phase Tuning10.1103/PhysRevB.99.161301 ↗
15. Proximity-Effect-Induced Superconducting Gap in Topological Surface States-A Point Contact Spectroscopy Study of NbSe2/Bi2Se3 Superconductor-Topological Insulator Heterostructures10.1038/s41598-017-07990-3 ↗
16. Spintronics and Pseudospintronics in Graphene and Topological Insulators10.1038/nmat3305 ↗
17. Proximity Induced High-Temperature Magnetic Order in Topological Insulator-Ferrimagnetic Insulator Heterostructure10.1021/nl500973k ↗
18. New universal type of interface in the magnetic insulator/topological insulator heterostructures10.1021/acs.nanolett.8b03057 ↗
19. Proximity-Induced Magnetism and an Anomalous Hall Effect in Bi2Se3/LaCoO3: A Topological Insulator/Ferromagnetic Insulator Thin Film Heterostructure10.1039/C8NR02083C ↗
20. Growth and Characterization of Hybrid Insulating Ferromagnet-Topological Insulator Heterostructure Devices10.1063/1.4831987 ↗
21. CMR manganites: Physics, thin films and devices10.1088/0022-3727/36/8/201 ↗
22. Exchange bias effect in epitaxial La0.35Sr0.65MnO3/La0.7Sr0.3MnO3 bilayers: Impact of antiferromagnet growth conditions10.1016/j.vacuum.2020.109280 ↗
23. Substrate-independent catalyst-free synthesis of high-purity Bi2Se3 nanostructures10.1063/1.4807121 ↗
24. Transport properties of La0.7Sr0.3MnO3/Si thin films grown by polymer-assisted chemical solution deposition10.1055/s-0033-1340473 ↗
25. X-ray Diffraction and 119Sn Mössbauer Spectroscopy Study of a New Phase in the Bi2Se3−SnSe System: SnBi4Se710.1021/ic9812858 ↗
26. Coherent heteroepitaxy of Bi2Se3 on GaAs (111) B10.1063/1.3532845 ↗
27. Anisotropic Step-Flow Growth and Island Growth of GaN(0001) by Molecular Beam Epitaxy10.1103/PhysRevLett.82.2749 ↗
28. Reliable determination of chemical state in X-ray photoelectron spectroscopy based on sample-work-function referencing to adventitious carbon: Resolving the myth of apparent constant binding energy of the C 1s peak10.1016/j.apsusc.2018.04.226 ↗
29. Epitaxial growth of Bi2Se3 topological insulator thin films on Si (111)10.1063/1.3585673 ↗
30. Photoemission-induced gating of topological insulators10.1103/PhysRevB.83.081303 ↗
31. Field electron emission of layered Bi2Se3 nanosheets with atom-thick sharp edges10.1039/c3nr06015b ↗
32. Stability and Surface Reconstruction of Topological Insulator Bi2Se3 on Exposure to Atmosphere10.1021/jp506089b ↗
33. Cs adsorption on Bi2Se10.1016/j.susc.2019.01.006 ↗
34. Electrical transport properties and morphology of topological insulator Bi2Se3 thin films with different thickness prepared by magnetron sputtering10.1016/j.tsf.2016.02.043 ↗
35. Growth and quantum transport properties of vertical Bi2Se3 nanoplate films on Si substrates10.1088/1361-6528/aac457 ↗
36. Electron interaction-driven insulating ground state in Bi2Se3 topological insulators in the two-dimensional limit10.1103/PhysRevB.83.165440 ↗
37. Massive Dirac fermion on the surface of a magnetically doped topological insulator10.1126/science.1189924 ↗
38. Enhanced contribution of surface state and modification of magnetoresistance in FexBi2-xSe3 topological insulator crystals10.1063/1.4790310 ↗
39. Analytic expression for the entanglement entropy of a two-dimensional topological superconductor10.1103/PhysRevB.95.075152 ↗
40. Transport properties for Bi2Se3/La0.7Sr0.3MnO3 composites10.1016/j.ceramint.2019.10.206 ↗
41. The physics of manganites: Structure and transport10.1103/RevModPhys.73.583 ↗
42. Supercouducting and transport properties of YBa2Cu3O7/La0.7Sr0.3MnO3 bilayers10.1063/1.1991973 ↗
43. The effect of grain boundary on the properties of La0.7Sr0.3MnO3 thin films prepared by chemical solution deposition10.1016/j.ceramint.2005.01.012 ↗
44. Giant positive magnetoresistance in heterostructure (La0.7Sr0.3MnO3) coated with YBa2Cu3O7 composites10.1007/s00339-010-6082-5 ↗
45. Ferromagnet-superconductor interfaces: The length scales of interactions10.1088/1742-6596/108/1/012039 ↗
46. Two-Dimensional Transport-Induced Linear Magneto-Resistance in Topological Insulator Bi2Se3 Nanoribbons10.1021/nn2024607 ↗
47. Quantum interference in macroscopic crystals of nonmetallic Bi2Se310.1103/PhysRevLett.103.246601 ↗
48. Evidence of Robust 2D Transport and Efros-Shklovskii Variable Range Hopping in Disordered Topological Insulator (Bi2Se3) Nanowires10.1038/s41598-017-08018-6 ↗
49. Impurity Effect on Weak Antilocalization in the Topological Insulator Bi2Te310.1103/PhysRevLett.106.166805 ↗
50. Spin-Orbit Interaction and Magnetoresistance in the two Dimensional Random System10.1143/PTP.63.707 ↗
51. Microstructure and transport properties of epitaxial topological insulator Bi2Se3 thin films grown on MgO (100), Cr2O3 (0001), and Al2O3 (0001) templates10.1063/1.4932027 ↗
52. Electrically tunable surface-to-bulk coherent coupling in topological insulator thin films10.1103/PhysRevB.84.233101 ↗
53. Thickness-dependent bulk properties and weak antilocalization effect in topological insulator Bi2Se310.1103/PhysRevB.84.073109 ↗
54. Effects of electron-electron collisions with small energy transfers on quantum localization10.1088/0022-3719/15/36/018 ↗
55. Proximity-Induced Magnetic Order in a Transferred Topological Insulator Thin Film on a Magnetic Insulator10.1021/acsnano.8b02647 ↗
56. Carrier density dependence of the magnetic properties in iron-doped Bi2Se3 topological insulator10.1063/1.4788834 ↗
57. Two interface effects: Exchange bias and magnetic proximity10.1016/j.physrep.2013.10.002 ↗
58. A high-temperature ferromagnetic topological insulating phase by proximity coupling10.1038/nature17635 ↗
59. Magnetic proximity effect in the three-dimensional topological insulator/ferromagnetic insulator heterostructure10.1103/PhysRevB.88.224401 ↗