MgO/Fe(001) and MgO/Fe (001) -p (1×1) O interfaces for magnetic tunnel junctions: A comparative study

Physical Review B - Condensed Matter and Materials Physics

Volumn 80, Issue 10, 2009, Pages

  Cattoni, A ^a   Petti, D ^a   Brivio, S ^a   Cantoni, M ^a   Bertacco, R ^a   Ciccacci, F ^a  

^a POLITECNICO DI MILANO   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 70349925713     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.104437     Document Type: Article

References (37)

1. W. H. Butler, X.-G. Zhang, T. C. Schulthess, and J. M. MacLaren, Phys. Rev. B 63, 054416 (2001). 10.1103/PhysRevB.63.054416
2. J. Mathon and A. Umerski, Phys. Rev. B 63, 220403 (2001). 10.1103/PhysRevB.63.220403
3. S. Yuasa, T. Nagahama, A. Fukushima, Y. Suzuki, and K. Ando, Nature Mater. 3, 868 (2004). 10.1038/nmat1257
4. S. S. P. Parkin, C. Kaiser, A. Panchula, P. M. Rice, B. Hughes, M. Samant, and S.-H. Yang, Nature Mater. 3, 862 (2004). 10.1038/nmat1256
5. S. Ikeda, J. Hayakawa, Y. Ashizawa, Y. M. Lee, K. Miura, H. Hasegawa, M. Tsunoda, F. Matsukura, and H. Ohno, Appl. Phys. Lett. 93, 082508 (2008). 10.1063/1.2976435
6. S. A. Wolf, D. D. Awschalom, R. A. Buhrman, J. M. Daughton, S. von Molnar, M. L. Roukes, A. Y. Chtchelkanova, and D. M. Treger, Science 294, 1488 (2001). 10.1126/science.1065389
7. F. A. Cardoso, J. Germano, R. Ferreira, S. Cardoso, V. C. Martins, P. P. Freitas, M. S. Piedade, and L. Sousa, J. Appl. Phys. 103, 07A310 (2008). 10.1063/1.2836713
8. J. S. Moodera, J. Nowak, L. R. Kinder, P. M. Tedrow, R. J. M. van de Veerdonk, B. A. Smits, M. van Kampen, H. J. M. Swagten, and W. J. M. de Jonge, Phys. Rev. Lett. 83, 3029 (1999) 10.1103/PhysRevLett.83.3029
9. P. LeClair, J. T. Kohlhepp, H. J. M. Swagten, and W. J. M. de Jonge, Phys. Rev. Lett. 86, 1066 (2001) 10.1103/PhysRevLett.86.1066
10. F. Greullet, C. Tiusan, F. Montaigne, M. Hehn, D. Halley, O. Bengone, M. Bowen, and W. Weber, Phys. Rev. Lett. 99, 187202 (2007). 10.1103/PhysRevLett.99. 187202
11. X. G. Zhang, W. H. Butler, and A. Bandyopadhyay, Phys. Rev. B 68, 092402 (2003). 10.1103/PhysRevB.68.092402
12. C. Tusche, H. L. Meyerheim, N. Jedrecy, G. Renaud, A. Ernst, J. Henk, P. Bruno, and J. Kirschner, Phys. Rev. Lett. 95, 176101 (2005). 10.1103/PhysRevLett.95.176101
13. C. Heiliger, P. Zahn, B. Y. Yavorsky, and I. Mertig, Phys. Rev. B 73, 214441 (2006). 10.1103/PhysRevB.73.214441
14. R. Bertacco and F. Ciccacci, Phys. Rev. B 59, 4207 (1999). 10.1103/PhysRevB.59.4207
15. R. Bertacco, M. Merano, and F. Ciccacci, Appl. Phys. Lett. 72, 2050 (1998). 10.1063/1.121261
16. F. Bisio, R. Moroni, M. Canepa, L. Mattera, R. Bertacco, and F. Ciccacci, Phys. Rev. Lett. 83, 4868 (1999). 10.1103/PhysRevLett.83.4868
17. K. O. Legg, F. Jona, D. W. Jepsen, and P. M. Marcus, Phys. Rev. B 16, 5271 (1977). 10.1103/PhysRevB.16.5271
18. J. B. Benziger and R. Madix, J. Electron Spectrosc. Relat. Phenom. 20, 281 (1980). 10.1016/0368-2048(80)85024-9
19. S. R. Chubb and W. E. Pickett, Phys. Rev. Lett. 58, 1248 (1987). 10.1103/PhysRevLett.58.1248
20. M. Sicot, S. Andrieu, P. Turban, Y. Fagot-Revurat, H. Cercellier, A. Tagliaferri, C. De Nadai, N. B. Brookes, F. Bertran, and F. Fortuna, Phys. Rev. B 68, 184406 (2003). 10.1103/PhysRevB.68.184406
21. L. Plucinski, Y. Zhao, B. Sinkovic, and E. Vescovo, Phys. Rev. B 75, 214411 (2007). 10.1103/PhysRevB.75.214411
22. R. Bertacco, M. Cantoni, M. Riva, A. Tagliaferri, and F. Ciccacci, Appl. Surf. Sci. 252, 1754 (2005). 10.1016/j.apsusc.2005.03.123
23. R. Bertacco, S. De Rossi, and F. Ciccacci, J. Vac. Sci. Technol. A 16, 2277 (1998). 10.1116/1.581340
24. M. Cantoni and R. Bertacco, Rev. Sci. Instrum. 75, 2387 (2004). 10.1063/1.1753681
25. M. Klaua, D. Ullmann, J. Barthel, W. Wulfhekel, J. Kirschner, R. Urban, T. L. Monchesky, A. Enders, J. F. Cochran, and B. Heinrich, Phys. Rev. B 64, 134411 (2001). 10.1103/PhysRevB.64.134411
26. T.-C. Lin, G. Seshadri, and J. A. Kelber, Appl. Surf. Sci. 119, 83 (1997). 10.1016/S0169-4332(97)00167-0
27. K. Miyokawa, S. Saito, T. Katayama, T. Saito, T. Kamino, K. Hanashima, Y. Suzuki, K. Mamiya, T. Koide, and S. Yuasa, Jpn. J. Appl. Phys., Part 2 44, L9 (2005). 10.1143/JJAP.44.L9
28. J. L. Vassent, A. Marty, B. Gilles, and C. Chatillon, J. Cryst. Growth 219, 434 (2000). 10.1016/S0022-0248(00)00631-X
29. A. Santoni and F. J. Himpsel, Phys. Rev. B 43, 1305 (1991). 10.1103/PhysRevB.43.1305
30. S. De Rossi, F. Ciccacci, and S. Crampin, Phys. Rev. Lett. 77, 908 (1996). 10.1103/PhysRevLett.77.908
31. T. Kotani and H. Akai, Phys. Rev. B 54, 16502 (1996). 10.1103/PhysRevB.54.16502
32. Electrons cannot enter the solid until their energies are higher than the vacuum level and this furnishes a simple way for measuring the work function, provided that the energy of the beam has been carefully calibrated (see Ref.).
33. Actually the peak B1 is more attenuated by the MgO film than for the rest of the spectruism, but this is a well-known result explained in terms of the high sensitivity of this peak to the surface order, which is altered after MgO deposition, see also Refs..
34. Note that the value of Δ EC is much higher than that previously reported by some of the authors in Ref. from the clean Fe(001) surface, but the same holds true also for the Fe (001) -p (1×1) O surface. This is probably due to the higher surface order of the samples investigated in the present paper and to some differences in the experimental apparatus.
35. Y. Z. Wu, A. K. Schmid, and Z. Q. Qiu, Phys. Rev. Lett. 97, 217205 (2006). 10.1103/PhysRevLett.97.217205
36. B. D. Yu and J.-S. Kim, Phys. Rev. B 73, 125408 (2006). 10.1103/PhysRevB.73.125408
37. F. Bonell, S. Andrieu, A. M. Bataille, C. Tiusan, and G. Lengaigne, Phys. Rev. B 79, 224405 (2009). 10.1103/PhysRevB.79.224405