Giant enhancement of spin accumulation and long-distance spin precession in metallic lateral spin valves
Source abstract
Abstract
The non-local spin injection in lateral spin valves is strongly expected to be an effective method to generate a pure spin current for potential spintronic application. However, the spin-valve voltage, which determines the magnitude of the spin current flowing into an additional ferromagnetic wire, is typically of the order of 1 μV. Here we show that lateral spin valves with low-resistivity NiFe/MgO/Ag junctions enable efficient spin injection with high applied current density, which leads to the spin-valve voltage increasing 100-fold. Hanle effect measurements demonstrate a long-distance collective 2π spin precession along a 6-μm-long Ag wire. These results suggest a route to faster and manipulable spin transport for the development of pure spin-current-based memory, logic and sensing devices.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic properties of thin films · Heusler alloys: electronic and magnetic properties · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
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1. Parkin, S. S. P. et al. Giant tunnelling magnetoresistance at room temperature with MgO(100) tunnel barriers. Nature Mater. 3, 862–867 (2004).10.1038/nmat1256 ↗
2. Yuasa, S., Nagahama, T., Fukushima, A., Suzuki, Y. & Ando, K. Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions. Nature Mater. 3, 868–871 (2004).10.1038/nmat1257 ↗
3. Slonczewski, J. C. Current-driven excitation of magnetic multilayers. J. Magn. Magn. Mater. 159, L1–L7 (1996).10.1016/0304-8853(96)00062-5 ↗
4. Berger, L. Emission of spin waves by a magnetic multilayer traversed by a current. Phys. Rev. B 54, 9353–9358 (1996).10.1103/PhysRevB.54.9353 ↗
5. Tsoi, M et al. Excitation of a magnetic multilayer by an electric current. Phys. Rev. Lett. 80, 4281–4284 (1998).10.1103/PhysRevLett.80.4281 ↗
6. Sun, J. Z. Current-driven magnetic switching in manganite trilayer junctions. J. Magn. Magn. Mater. 202, 157–162 (1999).10.1016/S0304-8853(99)00289-9 ↗
7. Myers, E. B., Ralph, D. C., Katine, J. A., Louie, R. N. & Buhrman, R. A. Current-induced switching of domains in magnetic multilayer devices. Science 285, 867–870 (1999).10.1126/science.285.5429.867 ↗
8. Katine, J. A., Albert, F. J., Buhrman, R. A., Myers, E. B. & Ralph, D. C. Current-driven magnetization reversal and spin-wave excitations in Co/Cu/Co pillars. Phys. Rev. Lett. 84, 3149–3152 (2000).10.1103/PhysRevLett.84.3149 ↗
9. Kiselev, S. I. et al. Microwave oscillations of a nanomagnet driven by a spin-polarized current. Nature 425, 380–383 (2003).10.1038/nature01967 ↗
10. Johnson, M. & Silsbee, R. H. Thermodynamic analysis of interfacial transport and of the thermomagnetoelectric system. Phys. Rev. B 35, 4959–4972 (1987).10.1103/PhysRevB.35.4959 ↗
11. Van Son, P. C., van Kempen, H. & Wyder, P. Boundary resistance of ferromagnetic–nonferromagnetic metal interface. Phys. Rev. Lett. 58, 2271–2273 (1987).10.1103/PhysRevLett.58.2271 ↗
12. Kimura, T., Otani, Y. & Hamrle, J. Switching magnetization of nanoscale ferromagnetic particle using nonlocal spin injection. Phys. Rev. Lett. 96, 037201 (2006).10.1103/PhysRevLett.96.037201 ↗
13. Yang, T., Kimura, T. & Otani, Y. Giant spin-accumulation signal and pure spin-current-induced reversible magnetization switching. Nature Phys. 4, 851–854 (2008).10.1038/nphys1095 ↗
14. Sun, J. Z. et al. A three-terminal spin-torque-driven magnetic switch. Appl. Phys. Lett. 95, 083506 (2009).10.1063/1.3216851 ↗
15. Ilgaz, D. et al. Domain-wall depinning assisted by pure spin currents. Phys. Rev. Lett. 105, 076601 (2010).10.1103/PhysRevLett.105.076601 ↗
16. Jedema, F. J., Filip, A. T. & van Wees, B. J. Electrical spin injection and accumulation at room temperature in an all-metal mesoscopic spin valve. Nature 410, 345–348 (2001).10.1038/35066533 ↗
17. Jedema, F. J., Heershe, H. B., Filip, A. T., Baselmans, J. J. A. & van Wees, B. J. Electrical detection of spin precession in a metallic mesoscopic spin valve. Nature 416, 713–716 (2002).10.1038/416713a ↗
18. Garzon, S., Žutıć, I. & Webb, R. A. Temperature-dependent asymmetry of the nonlocal spin-injection resistance: Evidence for spin nonconserving interface scattering. Phys. Rev. Lett. 94, 176601 (2005).10.1103/PhysRevLett.94.176601 ↗
19. Valenzuela, S. O., Monsma, D. J., Marcus, C. M., Narayanamurti, V. & Tinkham, M. Spin polarized tunneling in room-temperature mesoscopic spin valves. Phys. Rev. Lett. 94, 166601 (2005).10.1103/PhysRevLett.94.196601 ↗
20. Godfrey, R. & Johnson, M. Spin injection in mesoscopic silver wires: Experimental test of resistance mismatch. Phys. Rev. Lett. 96, 136601 (2006).10.1103/PhysRevLett.96.136601 ↗
21. Kimura, T. & Otani, Y. Large spin accumulation in a permalloy–silver lateral spin valve. Phys. Rev. Lett. 99, 196604 (2007).10.1103/PhysRevLett.99.196604 ↗
22. Vogel, A., Wulfhorst, J. & Meier, G. Enhanced spin injection and detection in spin valves with intergrated tunnel barrier. Appl. Phys. Lett. 94, 122510 (2009).10.1063/1.3109787 ↗
23. Wang, X. J., Zou, H., Ocola, L. E. & Ji, Y. High spin injection polarization at an elevated dc bias in tunnel-junction-based lateral spin valves. Appl. Phys. Lett. 95, 022519 (2009).10.1063/1.3182785 ↗
24. Wulfhekel, W. et al. Single-crystal magnetotunnel junctions. Appl. Phys. Lett. 78, 509–511 (2001).10.1063/1.1342778 ↗
25. Bakker, F. L., Slachter, A., Adam, J. P. & van Wees, B. J. Interplay of Peltier and Seebeck effects in nanoscale nonlocal spin valves. Phys. Rev. Lett. 105, 136601 (2010).10.1103/PhysRevLett.105.136601 ↗
26. Fukuma, Y., Wang, L., Idzuchi, H. & Otani, Y. Enhanced spin accumulation obtained by inserting low-resistance MgO interface in metallic lateral spin valves. Appl. Phys. Lett. 97, 012507 (2010).10.1063/1.3460909 ↗
27. Jedema, F. J., Costache, M. V., Heersche, H. B., Baselmans, J. J. A. & van Wees, B. J. Electrical detection of spin accumulation and spin precession at room temperature in metallic spin valves. Appl. Phys. Lett. 81, 5162–5164 (2002).10.1063/1.1532753 ↗
28. Takahashi, S. & Maekawa, S. Spin injection and detection in magnetic nanostructures. Phys. Rev. B 67, 052409 (2003).10.1103/PhysRevB.67.052409 ↗
29. Dubois, S. et al. Evidence for a short spin diffusion length in permalloy from the giant magnetoresistance of multilayered nanowires. Phys. Rev. B 60, 477–484 (1999).10.1103/PhysRevB.60.477 ↗
30. Johnson, M. & Silsbee, R. H. Interfacial charge-spin coupling: Injection and detection of spin magnetization in metals. Phys. Rev. Lett. 55, 1790–1793 (1985).10.1103/PhysRevLett.55.1790 ↗
31. Johnson, M. & Silsbee, R. H. Coupling of electronic charge and spin at a ferromagnetic–paramagnetic metal interface. Phys. Rev. B 37, 5312–5325 (1988).10.1103/PhysRevB.37.5312 ↗
32. Valenzuela, S. O. & Tinkham, M. Direct electronic measurement of the spin Hall effect. Nature 442, 176–179 (2006).10.1038/nature04937 ↗
33. Papaconstantopoulos, D. A. Handbook of the Band Structure of Elemental Solids (Plenum, 1986).
34. Žutıć, I., Fabian, J. & Sarma, S. D. Spintronics: Fundamentals and applications. Rev. Mod. Phys. 76, 323–410 (2004).10.1103/RevModPhys.76.323 ↗
35. Lou, X. et al. Electrical detection of spin transport in lateral ferromagnet–semiconductor devices. Nature Phys. 3, 197–202 (2007).10.1038/nphys543 ↗
36. Vant Erve, O. M. J. et al. Information processing with pure spin currents in silicon: Spin injection, extraction, manipulation, and detection. IEEE Trans. Electron Dev. 56, 2343–2347 (2009).10.1109/TED.2009.2027975 ↗
37. Koo, H. C. et al. Control of spin precession in a spin-injection field effect transistor. Science 325, 1515–1518 (2009).10.1126/science.1173667 ↗
38. Sasaki, T. et al. Temperature dependence of spin diffusion length in silicon by Hanle-type spin precession. Appl. Phys. Lett. 96, 122101 (2010).10.1063/1.3367748 ↗
39. Djayaprawira, D. D. et al. 230% room-temperature magnetoresistance in CoFeB/MgO/CoFeB magnetic tunnel junctions. Appl. Phys. Lett. 86, 092502 (2005).10.1063/1.1871344 ↗
40. Behin-Aein, B., Datta, D., Salahuddin, S. & Datta, S. Proposal for an all-spin logic device with built-in memory. Nature Nanotech. 5, 266–270 (2010).10.1038/nnano.2010.31 ↗