Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation

Nature Materials

Volumn 8, Issue 2, 2009, Pages 109-114

  Drew, A J ^a,b   Hoppler, J ^a,c   Schulz, L ^a   Pratt, F L ^d   Desai, P ^b   Shakya, P ^b   Kreouzis, T ^b   Gillin, W P ^b   Suter, A ^c   Morley, N A ^e   Malik, V K ^a   Dubroka, A ^a   Kim, K W ^a   Bouyanfif, H ^a   Bourqui, F ^a   Bernhard, C ^a   Scheuermann, R ^c   Nieuwenhuys, G J ^c   Prokscha, T ^c   Morenzoni, E ^c  

^a UNIVERSITY OF FRIBOURG   (Switzerland)

^b QUEEN MARY UNIVERSITY OF LONDON   (United Kingdom)

^c PAUL SCHERRER INSTITUTE   (Switzerland)

^d RUTHERFORD APPLETON LABORATORY   (United Kingdom)

^e UNIVERSITY OF SHEFFIELD   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

DEGREES OF FREEDOM (MECHANICS); ELECTRON DEVICES; ELECTRONIC PROPERTIES; INTERFACES (MATERIALS); MAGNETIC DEVICES; MAGNETOELECTRONICS; MAGNETORESISTANCE; POLARIZATION; TEMPERATURE DISTRIBUTION;

DEPTH-RESOLVED TECHNIQUES; EXPERIMENTAL TECHNIQUES; FUTURE TECHNOLOGIES; INJECTED ELECTRONS; ORGANIC SPINTRONICS; SPIN-DIFFUSION LENGTH; STRUCTURAL AND ELECTRONIC PROPERTIES; TEMPERATURE DEPENDENCE;

SPIN POLARIZATION;

EID: 58849113430     PISSN: 14761122     EISSN: 14764660     Source Type: Journal    
DOI: 10.1038/nmat2333     Document Type: Article

References (33)

1. Wolf, S. A. et al. Spintronics: A spin-based electronics vision for the future. Science 294, 1488-1495 (2001).
2. Xiong, Z. H., Wu, D., Vardeny, Z. V. & Shi, J. Giant magnetoresistance in organic spin-valves. Nature 427, 821-824 (2004).
3. Pramanik, S. et al. Observation of extremely long spin relaxation times in an organic nanowire spin valve. Nature Nano. 2, 216-219 (2007).
4. Sanvito, S. & Rocha, A. R. Molecular-spintronics: The art of driving spin through molecules. J. Comput. Theor. Nanosci. 3, 624-642 (2006).
5. Khaetskii, A. & Nazarov, Y. V. Spin-flip transitions between Zeeman subleveis in semiconductor quantum dots. Phys. Rev. B 63, 184433 (2001).
6. Cameron, A. R., Riblet, P. & Miller, P. A. Spin gratings and the measurement of electron drift mobility in multiple quantum well semiconductors. Phys. Rev. Lett. 76, 4793-4796 (1996).
7. Kikkawa, J. M. & Awschalom, D. D. Lateral drag of spin coherence in gallium arsenide. Nature 397, 139-141 (1999).
8. LaBella, V. et al. Spatially resolved spin-injection probability for gallium arsenide. Science 292, 1518-1521 (2001).
9. Kotissek, P. et al. Cross-sectional imaging of spin injection into a semiconductor. Nature Phys. 3, 872-877 (2007).
10. Julliere, M. Tunneling between ferromagnetic films. Phys. Lett. A 54, 225-226 (1975).
11. Tsukagoshi, K., Alphenaar, B. W. & Ago, H. Coherent transport of electron spin in a ferromagnetically contacted carbon nanotube. Nature 401, 572-574 (1999).
12. Dediu, V. et al. Room temperature spin polarized injection in organic semiconductor. Solid State Commun. 122, 181-184 (2002).
13. Shim, J. H. et al. Large spin diffusion length in an amorphous organic semiconductor. Phys. Rev. Lett. 100, 226603 (2008).
14. 3 electrodes. Phys. Rev. B 75, 245324 (2007).
15. Jiang, J. S., Pearson, J. E. & Bader, S. D. Absence of spin transport in the organic semiconductor Alq,. Phys. Rev. B 77, 035303 (2008).
16. Prokscha, T. et al. The new high-intensity surface muon beam μE4 for the generation of low-energy muons at PSI. Physica B 374, 460-462 (2006).
17. Bakule, P. & Morenzoni, E. Generation and applications of slow polarized muons. Contemp. Phys. 45, 203-225 (2004).
18. Drew, A. et al. Coexistence and coupling of superconductivity and magnetism in thin film structures. Phys. Rev. Lett. 95, 197201 (2005).
19. Suter, A. et al. Direct observation of nonlocal effects in a superconductor. Phys. Rev. Lett. 92, 087001 (2004).
20. Yunus, M. et al. Ambipolar electrical spin injection and spin transport in organic semiconductors. J. Appl. Phys. 103, 103714 (2008).
21. Tang, C. W. & VanSlyke, S. A. Organic electroluminescent diodes. Appl. Phys. Lett. 51, 913-915 (1987).
22. Demonkritov, S. et al. Magnetic-dipole mechanism for biquadratic interlayer coupling. Phys. Rev. B 49, 720-723 (1994).
23. Altbir, D., Kiwi, M., Ramirez, R. & Schuller, I. K. Dipolar interaction and its interplay with interface roughness. J. Magn. Magn. Mater. 149, L246-L250 (1995).
24. 3. Phys. Rev. Lett. 81, 1953-1956 (1998).
25. Tsymbal, E. Y., Mryasov, O. N. & LeClair, P. R. Spin-dependent tunnelling in magnetic tunnel junctions. J. Phys. Condens. Matter 15, R109-142 (2003).
26. 3. Appl. Phys. Lett. 79, 2582-2582 (2001).
27. Bässler, H. Charge transport in organic photoconductors. Phys. Status Solidi B 175, 15-56 (1993).
28. Colle, M., Gardiez, C. & Braun, M. The triplet state in tris-(8-hydroxyquinoline)aluminium. J. Appl. Phys. 96, 6133-6141 (2004).
29. 3. J. Phys. Condens. Matter 17, 6271-6283 (2005).
30. Prokscha, T. et al. The new μE4 beam at PSI: A hybrid-type large acceptance channel for the generation of a high intensity surface-muon beam. Nucl. lustrum. Methods A 595, 317-331 (2008).
31. Prokscha, T. et al. 〈http://lmu.web.psi.ch/lem/index. html〉.
32. Morenzoni, E. et al. Generation of very slow polarized positive muons. Phys. Rev. Lett. 72, 2793-2796 (1994).
33. Morenzoni, E. et al. Implantation studies of keV positive muons in thin metallic layers. Nucl. Instrum. Methods B 192, 254-266 (2002).