Intrinsic spin noise in MgO magnetic tunnel junctions: Applied Physics Letters: Vol 102, No 6

Abstract

We consider two intrinsic sources of noise in ultra-sensitive magnetic field sensors based on MgO magnetic tunnel junctions, coming both from ²⁵

nuclear spins (I = 5/2, 10% natural abundance) and S = 1 Mg-vacancies. While nuclear spins induce noise peaked in the MHz frequency range, the vacancies noise peaks in the GHz range. We find that the nuclear noise in submicron devices has a similar magnitude than the 1/f noise, while the vacancy-induced noise dominates in the GHz range. Interestingly, the noise spectrum under a finite magnetic field gradient may provide spatial information about the spins in the MgO layer.

REFERENCES

1. S. Parkin, C. Kaiser, A. Panchula, P. Rice, B. Hughes, M. Samant, and S. Yang, Nature Mater. 3, 862 (2004). https://doi.org/10.1038/nmat1256 , Google ScholarCrossref, CAS
2. S. Yuasa, T. Nagahama, A. Fukushima, Y. Suzuki, and K. Ando, Nature Mater. 3, 868 (2004). https://doi.org/10.1038/nmat1257 , , Google ScholarCrossref, CAS
3. S. Ingvarsson, G. Xiao, S. S. P. Parkin, W. J. Gallagher, G. Grinstein, and R. H. Koch, Phys. Rev. Lett. 85, 3289 (2000). https://doi.org/10.1103/PhysRevLett.85.3289 , , Google ScholarCrossref, CAS
4. S. Parkin, X. Jiang, C. Kaiser, A. Panchula, K. Roche, and M. Samant, Proc. IEEE 91, 661 (2003). https://doi.org/10.1109/JPROC.2003.811807 , , Google ScholarCrossref, CAS
5. K. Klaassen, X. Xing, and J. van Peppen, IEEE Trans. Magn. 41, 2307 (2005). https://doi.org/10.1109/TMAG.2005.850289 , , Google ScholarCrossref
6. P. Freitas, R. Ferreira, S. Cardoso, and F. Cardoso, J. Phys.: Condens. Matter 19, 165221 (2007). https://doi.org/10.1088/0953-8984/19/16/165221 , , Google ScholarCrossref
7. W. F. Egelhoff, Jr., P. W. T. Pong, J. Unguris, R. D. McMichael, E. R. Nowak, A. S. Edelstein, J. E. Burnette, and G. A. Fischer, Sens. Actuators, A 155, 217 (2009). https://doi.org/10.1016/j.sna.2009.08.016 , , Google ScholarCrossref, CAS
8. Z. Lei, G. Li, W. Egelhoff, P. Lai, and P. Pong, IEEE Trans. Magn. 47, 602 (2011). https://doi.org/10.1109/TMAG.2010.2100814 , , Google ScholarCrossref, CAS
9. R. Guerrero, F. Aliev, R. Villar, J. Hauch, M. Fraune, G. Guntherodt, K. Rott, H. Bruckl, and G. Reiss, Appl. Phys. Lett. 87, 042501 (2005). https://doi.org/10.1063/1.2001128 , , Google ScholarScitation
10. M. Nor, A. Faridah, T. Kato, S. Ahn, T. Daibou, K. Ono, M. Oogane, Y. Ando, and T. Miyazaki, J. Appl. Phys. 99, 08T306 (2006). https://doi.org/10.1063/1.2165142 , , Google ScholarScitation
11. A. Gokce, E. Nowak, S. Yang, and S. Parkin, J. Appl. Phys. 99, 08A906 (2006). https://doi.org/10.1063/1.2169591 , , Google ScholarScitation
12. F. Aliev, R. Guerrero, D. Herranz, R. Villar, F. Greullet, C. Tiusan, and M. Hehn, Appl. Phys. Lett. 91, 232504 (2007). https://doi.org/10.1063/1.2822812 , , Google ScholarScitation
13. T. Arakawa, T. Tanaka, K. Chida, S. Matsuo, Y. Nishihara, D. Chiba, K. Kobayashi, T. Ono, A. Fukushima, and S. Yuasa, Phys. Rev. B 86, 224423 (2012). https://doi.org/10.1103/PhysRevB.86.224423 , , Google ScholarCrossref
14. M. Berglund and M. E. Wieser, Pure Appl. Chem. 83, 397 (2011). https://doi.org/10.1351/PAC-REP-10-06-02 , , Google ScholarCrossref, CAS
15. L. E. Halliburton, L. A. Kappers, D. L. Cowan, F. Dravnieks, and J. E. Wertz, Phys. Rev. Lett. 30, 607 (1973). https://doi.org/10.1103/PhysRevLett.30.607 , , Google ScholarCrossref, CAS
16. L. E. Halliburton, D. L. Cowan, W. B. J. Blake, and J. E. Wertz, Phys. Rev. B 8, 1610 (1973). https://doi.org/10.1103/PhysRevB.8.1610 , , Google ScholarCrossref, CAS
17. B. Rose and L. Halliburton, J. Phys. C 7, 3981 (1974). https://doi.org/10.1088/0022-3719/7/21/018 , , Google ScholarCrossref, CAS
18. C. Araujo, M. Kapilashrami, X. Jun, O. Jayakumar, S. Nagar, Y. Wu, C. Arhammar, B. Johansson, L. Belova, R. Ahuja et al., Appl. Phys. Lett. 96, 232505 (2010). https://doi.org/10.1063/1.3447376 , , Google ScholarScitation
19. N. J. Stone, At. Data Nucl. Data Tables 90, 75 (2005). https://doi.org/10.1016/j.adt.2005.04.001 , , Google ScholarCrossref, CAS
20. T. Sleator, E. L. Hahn, C. Hilbert, and J. Clarke, Phys. Rev. Lett. 55, 1742 (1985). https://doi.org/10.1103/PhysRevLett.55.1742 , , Google ScholarCrossref, CAS
21. C. L. Degen, M. Poggio, H. J. Mamin, and D. Rugar, Phys. Rev. Lett. 99, 250601 (2007). https://doi.org/10.1103/PhysRevLett.99.250601 , , Google ScholarCrossref, CAS
22. J. Wertz, P. Auzins, J. Griffiths, and J. Orton, Discuss. Faraday Soc. 28, 136 (1959). https://doi.org/10.1039/df9592800136 , , Google ScholarCrossref
23. P. S. Fiske, J. F. Stebbins, and I. Farnan, Phys. Chem. Miner. 20, 587 (1994). https://doi.org/10.1007/BF00211854 , , Google ScholarCrossref, CAS
24. J. Freitas and M. Smith, Annu. Rep. NMR Spectrosc. 75, 25 (2012). https://doi.org/10.1016/B978-0-12-397018-3.00002-8 , , Google ScholarCrossref, CAS
25. R. Chaves, P. Freitas, B. Ocker, and W. Maass, Appl. Phys. Lett. 91, 102504 (2007). https://doi.org/10.1063/1.2775802 , , Google ScholarScitation, ISI
26. R. Chaves, P. Freitas, B. Ocker, and W. Maass, J. Appl. Phys. 103, 07E931 (2008). https://doi.org/10.1063/1.2839311 , , Google ScholarScitation
27. C. Tsang, C. Bonhote, Q. Dai, H. Do, B. Knigge, Y. Ikeda, Q. Le, B. Lengsfield, J. Lille, J. Li et al., IEEE Trans. Magn. 42, 145 (2006). https://doi.org/10.1109/TMAG.2005.861775 , , Google ScholarCrossref, CAS
28. A. Ferrari and G. Pacchioni, J. Phys. Chem. 99, 17010 (1995). https://doi.org/10.1021/j100046a029 , , Google ScholarCrossref, CAS
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