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Professor Johan Akerman's Publications

Göteborg, Sweden

Research field: Physics - Condensed Matter Physics
Spintronics, Magnetism, Applied Physics
Journal Article (37)

Journal Article

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M. Madami, S. Bonetti, G. Consolo, S. Tacchi, G. Carlotti, G. Gubbiotti, F. B. Mancoff, M. a. Yar, J. Åkerman (2011) Direct observation of a propagating spin wave induced by spin-transfer torque, 8-11. In Nature Nanotechnology.
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Ye Pogoryelov, P K Muduli, S Bonetti, E Iacocca, Fred Mancoff, Johan Åkerman (2011) Frequency modulation of spin torque oscillator pairs, 192501. In Applied Physics Letters 98 (19).
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P. K. Muduli, O. G. Heinonen, Johan Åkerman (2011) Intrinsic frequency doubling in a magnetic tunnel junction based spin torque oscillator, 076102. In J. Appl. Phys. 110 (7).
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P K Muduli, Ye. Pogoryelov, Fred Mancoff, J. Akerman (2011) Modulation of Individual and Mutually Synchronized Nanocontact-Based Spin Torque Oscillators, 1575-1579. In IEEE Transactions on Magnetics 47 (6).
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P K Muduli, Ye Pogoryelov, G Consolo, Fred Mancoff, Johan Åkerman (2011) Modulation of single and double spin torque oscillators, 318-321. In AIP Conf. Proc..
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P K Muduli, Ye Pogoryelov, Y Zhou, Fred Mancoff (2011) Spin Torque Oscillators and RF Currents — Modulation , Locking , and Ringing, 37-41. In Integrated Ferroelectrics 125 (June).
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Ye. Pogoryelov, P K Muduli, S. Bonetti, Fred Mancoff, Johan Åkerman (2011) Spin-torque oscillator linewidth narrowing under current modulation, 192506. In Applied Physics Letters 98 (19).
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C. L. Zha, R. K. Dumas, Y. Y. Fang, V. Bonanni, J. Nogués, Johan Åkerman (2010) Continuously graded anisotropy in single (Fe[sub 53]Pt[sub 47])[sub 100−x]Cu[sub x] films, 182504. In Appl. Phy. Lett. 97 (18).
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Stefano Bonetti, Vasil Tiberkevich, Giancarlo Consolo, Giovanni Finocchio, Pranaba Muduli, Fred Mancoff, Andrei Slavin, Johan Åkerman (2010) Experimental Evidence of Self-Localized and Propagating Spin Wave Modes in Obliquely Magnetized Current-Driven Nanocontacts, 1-4. In Physical Review Letters 105 (21).
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P. K. Muduli, Ye. Pogoryelov, S. Bonetti, Fred Mancoff, Johan Åkerman (2010) Nonlinear frequency and amplitude modulation of a nanocontact-based spin-torque oscillator, 140408(R). In Physical Review B 81 (14).
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Yan Zhou, Vasil Tiberkevich, Giancarlo Consolo, Ezio Iacocca, Bruno Azzerboni, Andrei Slavin, Johan Åkerman (2010) Oscillatory transient regime in the forced dynamics of a nonlinear auto oscillator, 012408. In Physical Review B 82 (1).
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Yan Zhou, Franklin G Shin, Bo Guan, Johan Åkerman (2009) Capacitance Effect on Microwave Power Spectra of Spin-Torque Oscillator With Thermal Noise, 2773-2776. In IEEE Transactions on Magnetics 45 (6).
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Yan Zhou, S Bonetti, J Persson, Johan Åkerman (2009) Capacitance Enhanced Synchronization of Pairs of Spin-Transfer Oscillators, 2421-2423. In IEEE Transactions on Magnetics 45 (6).
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Yan Zhou, C L Zha, S Bonetti, J Persson, Johan Åkerman (2009) Microwave generation of tilted-polarizer spin torque oscillator, 07D116. In Journal of Applied Physics 105 (7).
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Yan Zhou, Johan Åkerman (2009) Perpendicular spin torque promotes synchronization of magnetic tunnel junction based spin torque oscillators, 112503. In Applied Physics Letters 94 (11).
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C L Zha, J Persson, S Bonetti, Y Y Fang, Johan Åkerman (2009) Pseudo spin valves based on L1[sub 0] (111)-oriented FePt fixed layers with tilted anisotropy, 163108. In Applied Physics Letters 94 (16).
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C L Zha, S Bonetti, J Persson, Yan Zhou, J Åkerman (2009) Pseudo-spin-valve with L1[sub 0] (111)-oriented FePt fixed layer, 07E910. In Journal of Applied Physics 105 (7).
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Stefano Bonetti, Pranaba Muduli, Fred Mancoff, Johan Åkerman (2009) Spin torque oscillator frequency versus magnetic field angle: The prospect of operation beyond 65 GHz, 102507. In Applied Physics Letters 94 (10).
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Yan Zhou, S Bonetti, C L Zha, Johan Åkerman (2009) Zero-field precession and hysteretic threshold currents in a spin torque nano device with tilted polarizer, 103028. In New Journal of Physics 11 (10).
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Yan Zhou, C. L. Zha, S. Bonetti, J. Persson, Johan Åkerman (2008) Spin-torque oscillator with tilted fixed layer magnetization, 262508. In Applied Physics Letters 92 (26).
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Casey W. Miller, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, Yan Zhou, Johan Åkerman (2008) Temperature and angular dependences of dynamic spin-polarized resonant tunneling in CoFeB∕MgO∕NiFe junctions, 07A904. In Journal of Applied Physics 103 (7).
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Yan Zhou, J Persson, S Bonetti, Johan Åkerman (2008) Tunable intrinsic phase of a spin torque oscillator, 092505. In Applied Physics Letters 92 (9).
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Casey W. Miller, Zhi-Pan Li, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, Johan Åkerman (2007) Dynamic Spin-Polarized Resonant Tunneling in Magnetic Tunnel Junctions, 1-4. In Physical Review Letters 99 (4).
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Casey W Miller, Zhi-pan Li, Johan Åkerman, Ivan K Schuller (2007) Impact of interfacial roughness on tunneling conductance and extracted barrier parameters, 043513. In Applied Physics Letters 90 (4).
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Yan Zhou, J Persson (2007) Intrinsic phase shift between a spin torque oscillator and an alternating current, 09A510. In Journal of Applied Physics 101 (9).
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J Persson, Y Zhou, J Åkerman (2007) Phase-locked spin torque oscillators: Impact of device variability and time delay, 2007-2010. In Journal of Applied Physics.
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Johan Åkerman, V Ström, K V Rao, E Dan Dahlberg (2007) Separation of exchange anisotropy and magnetocrystalline anisotropy in Co∕CoO bilayers by means of ac susceptibility measurements, 9-12. In Physical Review B 76 (14).
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Y Zhou, J Persson, J Åkerman (2007) Tunable intrinsic phase shift between a spin torque nano-oscillator and an AC current, 2007-2010. In 7th IEEE Conference on Nanotechnology, 2007. IEEE.
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Johan Åkerman, M Deherrera, J M Slaughter, R Dave, J J Sun, J T Martin, S Tehrani (2006) Intrinsic Reliability of AlOx-Based Magnetic Tunnel Junctions, 2661-2663. In IEEE Transactions on Magnetics 42 (10).
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Renu W Dave, G Steiner, J M Slaughter, J J Sun, B Craigo, S Pietambaram, K Smith, G Grynkewich, M Deherrera, Johan Åkerman, S Tehrani (2006) MgO-Based Tunnel Junction Material for High-Speed Toggle Magnetic Random Access Memory, 1935-1939. In IEEE Transactions on Magnetics 42 (8).
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Casey W Miller, Zhi-pan Li, Ivan K Schuller, R W Dave, J M Slaughter, Johan Åkerman (2006) Origin of the breakdown of Wentzel-Kramers-Brillouin-based tunneling models, 1-4. In Physical Review B 74 (21).
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BN Engel, J Åkerman, B Butcher, RW Dave, M (2005) A 4-Mb toggle MRAM based on a novel bit and switching method, 132-136. In IEEE Transactions on Magnetics 41 (1).
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J Åkerman (2005) Toward a Universal Memory, 2004-2006. In Science 743 (9).
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Johan Åkerman, Philip Brown, Mark Deherrera, Mark Durlam, Earl Fuchs, Don Gajewski, Mark Griswold, Jason Janesky, Joseph J Nahas, Senior Member (2004) Demonstrated Reliability of 4-Mb MRAM, 428-435. In IEEE Transactions on Device and Materials Reliability 4 (3).
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MI Montero, JJ Åkerman, A Varilci, IK Schuller (2003) Flux pinning by regular nanostructures in Nb thin films: Magnetic vs. structural effects, 118-124. In Europhysics Letters 63 (July).
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JJ Åkerman, I V Roshchin, J M Slaughter, R W Dave, I K Schuller (2003) Origin of temperature dependence in tunneling magnetoresistance, 104-110. In Europhysics Letters (EPL) 63 (1).
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Xavier Batlle, Bart Jan Hattink, Johan J Åkerman, Roberto Escudero, Ivan K Schuller (2003) The oxidation state at tunnel junction interfaces, 78-83. In Journal of Magnetism and Magnetic Materials 260 (1-2).
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