Role of the magnetic anisotropy in organic spin valves
Source abstract
Abstract
Magnetic anisotropy plays an important role in determining the magnetic functionality of thin film based electronic devices. We present here, the first systematic study of the correlation between magnetoresistance (MR) response in organic spin valves (OSVs) and magnetic anisotropy of the bottom ferromagnetic electrode over a wide temperature range (10 K–350 K). The magnetic anisotropy of a La0.67Sr0.33MnO3 (LSMO) film epitaxially grown on a SrTiO3 (STO) substrate was manipulated by reducing film thickness from 200 nm to 20 nm. Substrate-induced compressive strain was shown to drastically increase the bulk in-plane magnetic anisotropy when the LSMO became thinner. In contrast, the MR response of LSMO/OSC/Co OSVs for many organic semiconductors (OSCs) does not depend on either the in-plane magnetic anisotropy of the LSMO electrodes or their bulk magnetization. All the studied OSV devices show a similar temperature dependence of MR, indicating a similar temperature-dependent spinterface effect irrespective of LSMO thickness, resulting from the orbital hybridization of carriers at the OSC/LSMO interface.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Advanced Condensed Matter Physics · Organic and Molecular Conductors Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Multiferroics: progress and prospects in thin films10.1038/nmat1805 ↗
2. Reversible electric control of exchange bias in a multiferroic field-effect device10.1038/nmat2803 ↗
3. Recent advances in organic spin-valve devices10.1016/j.synthmet.2009.10.014 ↗
4. A heteroepitaxial perovskite metal-base transistor10.1038/nmat2946 ↗
5. Spin-polarized organic light emitting diode based on a Novel Bipolar spin-valve10.1126/science.1223444 ↗
6. Enhanced tunnelling electroresistance effect due to a ferroelectrically induced phase transition at a magnetic complex oxide interface10.1038/nmat3564 ↗
7. Giant magnetoresistance in organic spin-valves10.1038/nature02325 ↗
8. Organic spin valves: a review10.1002/adfm.201504209 ↗
9. Giant magnetoresistance in organic spin valves10.1103/PhysRevLett.104.236602 ↗
10. Molecular spintronics: the rise of spinterface science10.1038/nphys1714 ↗
11. Unravelling the role of the interface for spin injection into organic semiconductors10.1038/nphys1688 ↗
12. Giant magnetoresistance enhancement at room-temperature in organic spin valves based on La0.67Sr0.33MnO3 electrodes10.1063/1.4818614 ↗
13. Spin-dependent transport behavior in C60 and Alq3 based spin valves with a magnetite electrode10.1063/1.4870154 ↗
14. Spin response in organic spin valves based on La2∕3Sr1∕3MnO3 electrodes10.1103/PhysRevB.75.245324 ↗
15. Spin routes in organic semiconductors10.1038/nmat2510 ↗
16. Room-temperature spintronic effects in Alq3-based hybrid devices10.1103/PhysRevB.78.115203 ↗
17. Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation10.1038/nmat2333 ↗
18. Effect of La0.67Sr0.33MnO3 electrodes on organic spin valves10.1063/1.2963814 ↗
19. Control of the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films through epitaxial strain10.1063/1.2908051 ↗
20. Future perspectives for spintronic devices10.1088/0022-3727/47/19/193001 ↗
21. Effects of lattice distortion and Jahn-Teller coupling on the magnetoresistance of and epitaxial films10.1088/0953-8984/9/18/010 ↗
22. Magnetic properties of La0.6Sr0.4MnO3 thin films on SrTiO3 and buffered Si substrates with varying thickness10.1063/1.2833388 ↗
23. Magnetic anisotropy and field switching in cobalt ferrite thin films deposited by pulsed laser ablation10.1063/1.3327424 ↗
24. Simultaneous enhancements of polarization and magnetization in epitaxial Pb(Zr0.52Ti0.48)O3/La0.7Sr0.3MnO3 multiferroic heterostructures enabled by ultrathin CoFe2O4 sandwich-layers10.1103/PhysRevB.91.054419 ↗
25. Radio-frequency impedance measurements using a tunnel-diode oscillator technique10.1063/1.1149892 ↗
26. Magnetic anisotropy in epitaxial CrO2 and CrO2/Cr2O3 bilayer thin films10.1103/PhysRevB.74.024420 ↗
27. Observation of charge ordering and the ferromagnetic transition in single crystal LSMO using RF transverse susceptibility10.1063/1.1853233 ↗
28. Asymmetric hysteresis loops and its dependence on magnetic anisotropy in exchange biased Co/CoO core-shell nanoparticles10.1063/1.4769350 ↗
29. The reversible susceptibility tensor of the Stoner-Wohlfarth model
30. Magnetoresistance anisotropy of polycrystalline cobalt films: geometrical-size and domain effects10.1103/PhysRevB.72.134401 ↗
31. Magnetic-field-dependent carrier injection at La2/3Sr1/3MnO3/and organic semiconductors interfaces10.1103/PhysRevLett.95.016802 ↗
32. Magnetic properties at surface boundary of a half-metallic ferromagnet La0.7Sr0.3MnO310.1103/PhysRevLett.81.1953 ↗
33. Engineering of spin injection and spin transport in organic spin valves using π-conjugated polymer brushes10.1002/adfm.201504201 ↗
34. Curvature-enhanced spin orbit coupling and spinterface effect in fullerene-based spin valves10.1038/srep19461 ↗
35. Isotope effect in spin response of π-conjugated polymer films and devices10.1038/nmat2633 ↗
36. Room-temperature magnetoresistance in organic spin-valves based on a Co2MnSi Heusler alloy10.1016/j.orgel.2013.09.002 ↗
37. Activating the molecular spinterface10.1038/nmat4902 ↗
38. A review on organic spintronic materials and devices: I. Magnetic field effect on organic light emitting diode
39. A review on organic spintronic materials and devices: II. Magnetoresistance in organic spin valves and spin organic light emitting diodes