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Utvalda publikationer 2006-2010

Spin Torque Oscillators

Nanomagnetism and Thin Film Magnetism

Magnetic Tunnel Junctions and MRAM

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Spin Torque Oscillators

Non-linear frequency and amplitude modulation of a nanocontact-based spin-torque oscillator

P. Muduli, S. Bonetti, Ye. Pogoryelov, G. Consolo, F. Mancoff, and Johan Åkerman,
Phys. Rev. B 81, 140408(R) (2010)

Oscillatory transient regime in the forced dynamics of a spin torque nano-oscillator
Y. Zhou, V. Tiberkevich, E. Iacocca, A. Slavin, and Johan Åkerman,
arXiv:0912.3650 (2009). Submitted to Phys. Rev. Lett.

Observation of self-localized and propagating spin wave modes in obliquely magnetized current-driven magnetic nanocontacts
Stefano Bonetti begin_of_the_skype_highlighting end_of_the_skype_highlighting, Vasyl S. Tiberkevich, Pranaba Muduli, Fred Mancoff, Andrei N. Slavin, and Johan Åkerman,
arXiv:0909.3331 (2009). Submitted to Phys. Rev. Lett.

Zero field precession and hysteretic threshold currents in a spin torque nano-device with tilted polarizer
Yan Zhou, S. Bonetti, C. L. Zha, and Johan Åkerman,
New J. of Phys. 11, 103028 (2009) .

Perpendicular Spin Torque Promotes Synchronization of Magnetic Tunnel Junction based Spin Torque Oscillators
Yan Zhou and Johan Åkerman,
Appl. Phys. Lett. 94, 112503 (2009).

Spin Torque Oscillator Frequency vs. Magnetic Field Angle: The Prospect of Operation beyond 65 GHz
S. Bonetti, P. Muduli, F. Mancoff, and Johan Åkerman,
Appl. Phys. Lett. 94, 102507 (2009).

Capacitance Enhanced Synchronization of Pairs of Spin-Transfer Oscillators
Yan Zhou, S. Bonetti, J. Persson, and Johan Åkerman,
IEEE Trans. Mag. 45, 2421-2423 (2009).

Tunable intrinsic phase of a spin torque oscillator
Yan Zhou, J. Persson, S. Bonetti, and Johan Åkerman,
Appl. Phys. Lett. 92, 092505 (2008).

Intrinsic phase shift between a spin torque oscillator and an alternating current
Yan Zhou, J. Persson, and Johan Åkerman,
J. Appl. Phys. 101, 09A510 (2007).

Phase Locked Spin Torque Oscillators: Impact of Device Variability and Time Delay
J. Persson, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 101, 09A503 (2007).

Nanomagnetism and Thin Film Magnetism

Nanostructured MnGa films with record high room temperature coercivity
C. L. Zha, R. K. Dumas, J. W. Lau, M. Mohseni, S. R. Sani, Å. F. Monsen, J. Nogués, and Johan Åkerman,
Submitted to Nano Letters (2010).

Exchange-bias-like effects in L1_0 (111)-oriented FePt based pseudo spin valves
C. L. Zha, P. Muduli, Josep Noguès, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072110 (2010).

FORC studies of exchange biased NiFe in L1_0(111) FePt-based spin valve
Y. Y. Fang, C. L. Zha, S. Bonetti, and Johan Åkerman,
J. Phys. Conf. Ser. 200, 072002 (2010).

Pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted anisotropy
C. L. Zha and Johan Åkerman,
J. Phys. Conf. Ser. 200, 052036 (2010).

Pseudo Spin Valves Using a (112)-textured D0_22 MnGa Fixed Layer
C. L. Zha, R. K. Dumas, J. Persson, S. M. Mohseni, J. Nogués, and Johan Åkerman,
IEEE Magn. Lett. 1, 2500104 (2010).

Study of pseudo spin valves based on L1_0 (111)-oriented FePt and FePtCu fixed layer with tilted magnetocrystalline anisotropy
C. L. Zha and Johan Åkerman,
IEEE Trans. Mag. 45, 3491 (2009).

Exchange Bias in L1_0 (111)-oriented FePt all-ferromagnetic pseudo spin valves
C. L. Zha, Josep Noguès, and Johan Åkerman,
IEEE Trans. Mag. 45, 3881 (2009).

Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1_0 (111)-oriented FePtCu fixed layers
C. L. Zha, Y. Y. Fang, J. Nogues, and Johan Åkerman,
J. Appl. Phys. 106, 053909 (2009).

Pseudo spin valves based on L1_0 (111)-oriented FePt fixed layer with tilted anisotropy
C. L. Zha, J. Persson, S. Bonetti, Y. Y. Fang, and Johan Åkerman,
Appl. Phys. Lett. 94, 163108 (2009).

Pseudo spin valve with L1_0 (111)-oriented FePt fixed layer
C. L. Zha, S. Bonetti, J. Persson, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 105, 07E910 (2009).

Separation of exchange anisotropy and magnetocrystalline anisotropy in Co∕CoO bilayers by means of ac susceptibility measurements
Johan Åkerman, V. Ström, K. V. Rao, and E. Dan Dahlberg,
Phys. Rev. B 76, 144416 (2007).

Magnetic Tunnel Junctions and MRAM

Temperature and angular dependences of dynamic spin-polarized resonant tunneling in CoFeB/MgO/NiFe junctions
Casey W. Miller, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, Yan Zhou, and Johan Åkerman,
J. Appl. Phys. 103 07A904 (2008).

Dynamic Spin-Polarized Resonant Tunneling in Magnetic Tunnel Junctions
Casey W. Miller, Zhi-Pan Li, Ivan K. Schuller, R. W. Dave, J. M. Slaughter, and Johan Åkerman
Phys. Rev. Lett 99, 047206 (2007).

Impact of interfacial roughness on tunneling conductance and extracted barrier parameters
Casey W. Miller, Z. Li, Johan Åkerman, Ivan K. Schuller,
Appl. Phys. Lett. 90, 043513 (2007).

Origin of the breakdown of Wentzel-Kramers-Brillouin-based tunneling models
Casey W. Miller, Zhi.-Pan. Li, Ivan K. Schuller, R. Dave, J. M. Slaughter, Johan Åkerman
Phys. Rev. B 72, 212404 (2006).

Intrinsic Reliability of AlOx-Based Magnetic Tunnel Junctions
Johan Åkerman, M. DeHerrera, J.M. Slaughter, R. Dave, J.J. Sun, J.T. Martin, S. Tehrani,
IEEE Trans. Magn. 42, 2661-2663 (2006).

MgO-Based Tunnel Junction Material for High-Speed Toggle Magnetic Random Access Memory
R. Dave, G. Steiner, J. M. Slaughter, J. J. Sun, B. Craigo, S. Pietambaram, K. Smith, G. Grynkewich, M. DeHerrera, J. Åkerman, S. Tehrani,
IEEE Trans. Magn. 42, 1935-1939 (2006).

Sidansvarig: Johan Åkerman|Sidan uppdaterades: 2015-11-18
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