Recent advances in nanocontact spin-torque oscillators

IEEE Transactions on Magnetics

Volumn 50, Issue 6, 2014, Pages

  Dumas, Randy K ^a   Sani, Sohrab R ^b,c   Mohseni, S Majid ^d   Iacocca, Ezio ^a   Pogoryelov, Yevgen ^e   Muduli, Pranaba K ^a,f   Chung, Sunjae ^b   Durrenfeld, Philipp ^a   A Akerman, Johan ^a,b,c  

^a UNIVERSITY OF GOTHENBURG   (Sweden)

^b ROYAL INSTITUTE OF TECHNOLOGY   (Sweden)

^c NanOsc AB Electrum 205   (Sweden)

^d SHAHID BEHESHTI UNIVERSITY   (Iran)

^e UPPSALA UNIVERSITY   (Sweden)

^f INDIAN INSTITUTE OF TECHNOLOGY DELHI   (India)

Author keywords

Frequency modulation; Magnetic multilayers; Magnetomechanical effects; Oscillators; Perpendicular magnetic anisotropy; Synchronization

Indexed keywords

ANISOTROPY; FREQUENCY MODULATION; MAGNETIC ANISOTROPY; MAGNETISM; MULTILAYERS; OSCILLATORS (ELECTRONIC); SYNCHRONIZATION;

APPLIED MAGNETIC FIELDS; IN-PLANE ANISOTROPY; MAGNETOMECHANICAL EFFECTS; MATERIAL COMBINATION; PERPENDICULAR ANISOTROPY; PERPENDICULAR MAGNETIC ANISOTROPY; PSEUDO-SPIN VALVES; SPIN-TORQUE OSCILLATORS;

MAGNETIC MULTILAYERS;

EID: 84957893461     PISSN: 00189464     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMAG.2014.2305762     Document Type: Article

References (71)

1. M. Tsoi, A. G. M. Jansen, J. Bass, W. C. Chiang, M. Seck, V. Tsoi, et al. "Excitation of a magnetic multilayer by an electric current". Phys. Rev. Lett., vol. 80, no. 19, pp. 4281-4284, 1998
2. L. Berger. "Emission of spin waves by a magnetic multilayer traversed by a current". Phys. Rev. B, vol. 54, no. 13, pp. 9353-9358, 1996
3. D. C. Ralph, and M. D. Stiles. "Spin transfer torques". J. Magn. Magn. Mater., vol. 320, no. 7, pp. 1190-1216, 2008
4. J. C. Slonczewski. "Current-driven excitation of magnetic multilayers". J. Magn. Magn. Mater., vol. 159, no. 1, pp. L1-L7, 1996
5. J.-V. Kim. "Spin torque oscillators". Solid State Phys., vol. 63, no. 1, p. 217, 2012
6. T. J. Silva, and W. H. Rippard. "Developments in nano-oscillators based upon spin-transfer point-contact devices". J. Magn. Magn. Mater., vol. 320, no. 7, pp. 1260-1271, 2008
7. A. Slavin, and V. Tiberkevich. "Nonlinear auto-oscillator theory of microwave generation by spin-polarized current". IEEE Trans. Magn., vol. 45, no. 4, pp. 1875-1918, Apr. 2009
8. J. C. Slonczewski. "Excitation of spin waves by an electric current". J. Magn. Magn. Mater., vol. 195, pp. L261-L268, May 1999
9. S. Bonetti, P. Muduli, F. Mancoff, and J. Åkerman. "Spin torque oscillator frequency versus magnetic field angle: The prospect of operation beyond 65 GHz". Appl. Phys. Lett., vol. 94, no. 10, p. 102507, Mar 2009
10. W. H. Rippard, M. R. Pufall, S. Kaka, T. J. Silva, and S. E. Russek. "Current-driven microwave dynamics in magnetic point contacts as a function of applied field angle". Phys. Rev. B, vol. 70, no. 10, p. 100406(R), 2004
11. G. Consolo, V. Puliafito, G. Finocchio, L. Lopez-Diaz, R. Zivieri, L. Giovannini, et al. "Combined frequency-amplitude nonlinear modulation: Theory, and applications". IEEE Trans. Magn., vol. 46, no. 9, pp. 3629-3634, Sep. 2010
12. P. K. Muduli, Y. Pogoryelov, S. Bonetti, G. Consolo, F. Mancoff, and J. Åkerman. "Nonlinear frequency, and amplitude modulation of a nanocontact-based spin-torque oscillator". Phys. Rev. B, vol. 81, no. 14, p. 140408, 2010
13. P. K. Muduli, Y. Pogoryelov, F. Mancoff, and J. Åkerman. "Modulation of individual, and mutually synchronized nanocontact-based spin torque oscillators". IEEE Trans. Magn., vol. 47, no. 6, pp. 1575-1579, Jun. 2011
14. P. K. Muduli, Y. Pogoryelov, Y. Zhou, F. Mancoff, and J. Åkerman. "Spin torque oscillators, and RF currents-Modulation, locking, and ringing". Integr. Ferroelectr., vol. 125, no. 1, pp. 147-154, 2011
15. Y. Pogoryelov, P. K. Muduli, S. Bonetti, E. Iacocca, F. Mancoff, and J. Åkerman. "Frequency modulation of spin torque oscillator pairs". Appl. Phys. Lett., vol. 98, p. 192501, May 2011
16. Y. Pogoryelov, P. K. Muduli, S. Bonetti, F. Mancoff, and J. Åkerman. "Spin-torque oscillator linewidth narrowing under current modulation". Appl. Phys. Lett., vol. 98, p. 192506, May 2011
17. M. R. Pufall, W. H. Rippard, S. Kaka, T. J. Silva, and S. E. Russek. "Frequency modulation of spin-transfer oscillators". Appl. Phys. Lett., vol. 86, no. 8, p. 082506, Feb 2005
18. E. Iacocca, and J. Åkerman. "Analytical investigation of modulated spin-torque oscillators in the framework of coupled differential equations with variable coefficients". Phys. Rev. B, vol. 85, no. 18, p. 184420, 2012
19. Y. Pogoryelov, P. K. Muduli, and J. Åkerman. "Combined widenarrow double modulation of spin-torque oscillators for improved linewidth during communication". IEEE Trans. Magn., vol. 48, no. 11, pp. 4077-4080, Nov. 2012
20. J. Persson, S. R. Sani, S. Bonetti, F. Magnusson, Y. Pogorylov, S. M. Mohseni, et al. "Spin-torque oscillator in an electromagnet package". IEEE. Trans. Magn., vol. 48, no. 11, pp. 4378-4381, Nov. 2012
21. P. Villard, U. Ebels, D. Houssameddine, J. Katine, D. Mauri, B. Delaet, et al. "A GHz spintronic-based RF oscillator". IEEE J. Solid-State Circuit, vol. 45, no. 1, pp. 214-223, Jan. 2010
22. S. I. Kiselev, J. C. Sankey, I. N. Krivorotov, N. C. Emley, R. J. Schoelkopf, R. A. Buhrman, et al. "Microwave oscillations of a nanomagnet driven by a spin-polarized current". Nature, vol. 425, pp. 380-383, Jul. 2003
23. V. V. Kruglyak, S. O. Demokritov, and D. Grundler. "Magnonics". J. Phys. D, Appl. Phys., vol. 43, no. 26, p. 264001, Jul. 2010
24. M. Madami, S. Bonetti, G. Consolo, S. Tacchi, G. Carlotti, G. Gubbiotti, et al. "Direct observation of a propagating spin wave induced by spintransfer torque". Nature Nanotechnol., vol. 6, pp. 635-638, Oct. 2011
25. H. Ulrichs, V. E. Demidov, S. O. Demokritov, and S. Urazhdin. "Spintorque nano-emitters for magnonic applications". Appl. Phys. Lett., vol. 100, p. 162406, Apr. 2012
26. Y. Y. Fang, J. Persson, C. Zha, J. Willman, C. W. Miller, and J. Åkerman. "Utility of reactively sputtered CuNx films in spintronics devices". J. Appl. Phys., vol. 111, no. 7, p. 073912, Apr. 2012
27. S. Petit-Watelot, R. M. Otxoa, and M. Manfrini. "Electrical properties of magnetic nanocontact devices computed using finiteelement simulations". Appl. Phys. Lett., vol. 100, p. 083507, Feb. 2012
28. S. M. Mohseni, R. K. Dumas, Y. Fang, J. W. Lau, S. R. Sani, J. Persson, et al. "Temperature-dependent interlayer coupling in Ni/Co perpendicular pseudo-spin-valve structures". Phys. Rev. B, vol. 84, no. 17, p. 174432, 2011
29. S. R. Sani, J. Persson, M. S. Mohseni, Y. Pogoryelov, P. K. Muduli, A. Eklund, et al. "Mutually synchronized bottom-up multi-nanocontact spin torque oscillators". Nature Commun., vol. 4, p. 2731, Sep. 2013
30. W. H. Rippard, M. R. Pufall, S. Kaka, S. E. Russek, and T. J. Silva. "Direct-current induced dynamics in Co90Fe10/Ni80Fe20 point contacts". Phys. Rev. Lett., vol. 92, no. 2, p. 027201, 2004
31. D. V. Berkov, and N. L. Gorn. "Magnetization oscillations induced by a spin-polarized current in a point-contact geometry: Mode hopping, and nonlinear damping effects". Phys. Rev. B, vol. 76, no. 14, p. 144414, 2007
32. S. Bonetti, V. Tiberkevich, G. Consolo, G. Finocchio, P. Muduli, F. Mancoff, et al. "Experimental evidence of self-localized, and propagating spin wave modes in obliquely magnetized current-driven nanocontacts". Phys. Rev. Lett., vol. 105, no. 21, p. 217204, 2010
33. G. Consolo, B. Azzerboni, G. Gerhart, G. A. Melkov, V. Tiberkevich, and A. N. Slavin. "Excitation of self-localized spinwave bullets by spin-polarized current in in-plane magnetized magnetic nanocontacts: A micromagnetic study". Phys. Rev. B, vol. 76, no. 14, p. 144410, 2007
34. G. Consolo, B. Azzerboni, L. Lopez-Diaz, G. Gerhart, E. Bankowski, V. Tiberkevich, et al. "Micromagnetic study of the above-threshold generation regime in a spin-torque oscillator based on a magnetic nanocontact magnetized at an arbitrary angle". Phys. Rev. B, vol. 78, no. 1, p. 014420, 2008
35. A. Slavin, and V. Tiberkevich. "Spin wave mode excited by spinpolarized current in a magnetic nanocontact is a standing self-localized wave bullet". Phys. Rev. Lett., vol. 95, no. 23, p. 237201, 2005
36. S. Bonetti, V. Puliafito, G. Consolo, V. S. Tiberkevich, A. N. Slavin, and J. Åkerman. "Power, and linewidth of propagating, and localized modes in nanocontact spin-torque oscillators". Phys. Rev. B, vol. 85, no. 17, p. 174427, 2012
37. I. N. Krivorotov, N. C. Emley, J. C. Sankey, S. I. Kiselev, D. C. Ralph, and R. A. Buhrman. "Time-domain measurements of nanomagnet dynamics driven by spin-transfer torques". Science, vol. 307, no. 5707, pp. 228-231, 2005
38. P. K. Muduli, O. G. Heinonen, and J. Åkerman. "Decoherence, and mode hopping in a magnetic tunnel junction based spin torque oscillator". Phys. Rev. Lett., vol. 108, no. 20, p. 207203, 2012
39. O. G. Heinonen, P. K. Muduli, E. Iacocca, and J. Åkerman. "Decoherence, mode hopping, and mode coupling in spin torque oscillators". IEEE Trans. Magn., vol. 49, no. 7, pp. 4398-4404, Jul. 2013
40. R. K. Dumas, E. Iacocca, S. Bonetti, S. R. Sani, S. M. Mohseni, A. Eklund, et al. "Spin-wave-mode coexistence on the nanoscale: A consequence of the oersted-field-induced asymmetric energy landscape". Phys. Rev. Lett., vol. 110, no. 25, p. 257202, 2013
41. G. Gerhart, E. Bankowski, G. A. Melkov, V. S. Tiberkevich, and A. N. Slavin. "Angular dependence of the microwave-generation threshold in a nanoscale spin-torque oscillator". Phys. Rev. B, vol. 76, no. 2, p. 024437, 2007
42. M. A. Hoefer, T. J. Silva, and M. D. Stiles. "Model for a collimated spin-wave beam generated by a single-layer spin torque nanocontact". Phys. Rev. B, vol. 77, no. 14, p. 144401, 2008
43. G. Consolo, G. Finocchio, G. Siracusano, S. Bonetti, A. Eklund, J. Åkerman, et al. "Non-stationary excitation of two localized spinwave modes in a nano-contact spin torque oscillator". J. Appl. Phys., vol. 114, no. 15, p. 153906, 2013
44. S. Kaka, M. R. Pufall, W. H. Rippard, T. J. Silva, S. E. Russek, and J. A. Katine. "Mutual phase-locking of microwave spin torque nano-oscillators". Nature, vol. 437, no. 7057, pp. 389-392, 2005
45. F. B. Mancoff, N. D. Rizzo, B. N. Engel, and S. Tehrani. "Phaselocking in double-point-contact spin-transfer devices". Nature, vol. 437, no. 7057, pp. 393-395, 2005
46. X. Chen, and R. H. Victora. "Phase locking of spin-torque oscillators by spin-wave interactions". Phys. Rev. B, vol. 79, no. 18, p. 180402, 2009
47. M. R. Pufall, W. H. Rippard, S. E. Russek, S. Kaka, and J. A. Katine. "Electrical measurement of spin-wave interactions of proximate spin transfer nanooscillators". Phys. Rev. Lett., vol. 97, no. 8, p. 087206, 2006
48. A. N. Slavin, and V. S. Tiberkevich. "Theory of mutual phase locking of spin-torque nanosized oscillators". Phys. Rev. B, vol. 74, no. 10, p. 104401, 2006
49. A. Ruotolo, V. Cros, B. Georges, A. Dussaux, J. Grollier, C. Deranlot, et al. "Phase-locking of magnetic vortices mediated by antivortices". Nature Nanotechnol., vol. 4, pp. 528-532, Aug. 2009
50. P. M. Braganca, B. A. Gurney, B. Awilson, J. A. Katine, S. Maat, and J. R. Childress. "Nanoscale magnetic field detection using a spin torque oscillator". Nanotechnology, vol. 21, no. 23, p. 235202, 2010
51. K. Mizushima, K. Kudo, T. Nagasawa, and R. Sato. "Signal-to-noise ratios in high-signal-transfer-rate read heads composed of spin-torque oscillators". J. Appl. Phys., vol. 107, no. 6, p. 063904, 2010
52. P. K. Muduli, Y. Pogoryelov, G. Consolo, F. Mancoff, and J. Åkerman. "Modulation of single, and double spin torque oscillators". in Proc. AIP Conf., 2011, pp. 1-318
53. M. L. Schneider, W. H. Rippard, M. R. Pufall, T. Cecil, T. J. Silva, and S. E. Russek. "Temperature dependence of spin-torquedriven self-oscillations". Phys. Rev. B, vol. 80, no. 14, p. 144412, Oct. 2009
54. J. V. Kim, Q. Mistral, C. Chappert, V. S. Tiberkevich, and A. N. Slavin. "Line shape distortion in a nonlinear auto-oscillator near generation threshold: Application to spin-torque nano-oscillators". Phys. Rev. Lett., vol. 100, p. 167201, Apr. 2008
55. J. V. Kim, V. Tiberkevich, and A. N. Slavin. "Generation linewidth of an auto-oscillator with a nonlinear frequency shift: Spin-torque nanooscillator". Phys. Rev. Lett., vol. 100, p. 017207, Jan. 2008
56. P. K. Muduli, O. G. Heinonen, and J. Åkerman. "Temperature dependence of linewidth in nanocontact based spin torque oscillators: Effect of multiple oscillatory modes". Phys. Rev. B, vol. 86, no. 17, p. 174408, Nov. 2012
57. W. H. Rippard, A. M. Deac, M. R. Pufall, J. M. Shaw, M. W. Keller, S. E. Russek, et al. "Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers". Phys. Rev. B, vol. 81, p. 014426, Jan. 2010
58. S. M. Mohseni, S. R. Sani, J. Persson, T. N. A. Nguyen, S. Chung, Y. Pogoryelov, et al. "Spin torque-generated magnetic droplet solitons". Science, vol. 339, pp. 1295-1298, Mar. 2013
59. B. A. Ivanov, and A. M. Kosevich. "Bound states of a large number of magnons in a ferromagnet with a single-ion anisotropy". Sov. Phys. JETP, vol. 45, no. 5, p. 1050, 1977
60. A. M. Kosevich, B. A. Ivanov, and A. S. Kovalev. "Magnetic solitons". Phys. Rep., vol. 194, pp. 117-238, Oct. 1990
61. M. A. Hoefer, T. J. Silva, and M. W. Keller. "Theory for a dissipative droplet soliton excited by a spin torque nanocontact". Phys. Rev. B, vol. 82, no. 5, p. 054432, 2010
62. M. A. Hoefer, M. Sommacal, and T. J. Silva. "Propagation, and control of nanoscale magnetic-droplet solitons". Phys. Rev. B, vol. 85, no. 21, p. 214433, 2012
63. S. M. Mohseni, S. R. Sani, R. K. Dumas, J. Persson, T. N. A. Nguyen, S. Chung, et al. "Magnetic droplet solitons in orthogonal nano-contact spin torque oscillators". Phys. B, Condensed Matter, vol. 435, pp. 84-87, Feb. 2014
64. B. Özyilmaz, A. D. Kent, J. Z. Sun, M. J. Rooks, and R. H. Koch. "Current-induced excitations in single cobalt ferromagnetic layer nanopillars". Phys. Rev. Lett., vol. 93, no. 17, p. 176604, 2004
65. B. Özyilmaz, and A. D. Kent. "Current-induced switching in single ferromagenetic layer nanopillar junctions". Appl. Phys. Lett., vol. 88, no. 16, p. 162506, 2006
66. M. L. Polianski, and P. W. Brouwer. "Current-induced transverse spinwave instability in a thin nanomagnet". Phys. Rev. Lett., vol. 92, no. 2, p. 026602, 2004
67. M. D. Stiles, J. Xiao, and A. Zangwill. "Phenomenological theory of current-induced magnetization precession". Phys. Rev. B, vol. 69, no. 5, p. 054408, 2004
68. D. V. Berkov, and N. L. Gorn. "Spin-torque driven magnetization dynamics in a nanocontact setup for low external fields: Numerical simulation study". Phys. Rev. B, vol. 80, no. 6, p. 064409, 2009
69. S. Komineas. "Rotating vortex dipoles in ferromagnets". Phys. Rev. Lett., vol. 99, p. 117202, Sep. 2007
70. O. Tchernyshyov, and G. W. Chern. "Fractional vortices, and composite domain walls in flat nanomagnets". Phys. Rev. Lett., vol. 95, no. 19, p. 197204, Nov. 2005
71. S. R. Sani, P. Durrenfeld, S. M. Mohseni, S. Chung, and J. Åkerman. "Microwave signal generation in single-layer nano-contact spin torque oscillators". IEEE Trans. Magn., vol. 49, no. 7, pp. 4331-4334, Jul. 2013