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Synchronization Phenomena in Spin Torque and Spin Hall Nano-Oscillators

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gupea_2077_52045_1.pdfThe main thesis file of Afshin Houshang21755KbAdobe PDF
gupea_2077_52045_3.pdfThesis cover and title page1480KbAdobe PDF
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Title: Synchronization Phenomena in Spin Torque and Spin Hall Nano-Oscillators
Authors: Houshang, Afshin
Issue Date: 15-May-2017
University: Göteborgs universitet. Naturvetenskapliga fakulteten
Institution: Department of Physics ; Institutionen för fysik
Parts of work: 1. A. Houshang, M. Fazlali, S. R. Sani, P. Dürrenfeld, E. Iacocca, J. Åkerman, R. K. Dumas “Effect of excitation fatigue on the synchronization of nanocontact spin-torque oscillators”, IEEE Magn. Lett. 5, 4 (2014)

2. A. Houshang, E. Iacocca, P. Dürrenfeld, S. R. Sani, J. Åkerman, R. K. Dumas “Spin-wave-beam driven synchronization of nanocontact spintorque oscillators”, Nature Nanotech. 3, 280 (2016)

3. R. K. Dumas, A. Houshang, J. Åkerman, “Chapter 12 - Propagating spin waves in nano-contact spin torque oscillators”, in Spin-Wave Confinement, second edition, edited by S. Demokritov (Pan Stanford Publishing). Ch. 12 (2017)

4. P. Dürrenfeld, A. A. Awad, A. Houshang, R. K. Dumas, J. Åkerman, “A 20 nm spin Hall nano-oscillator”, Nanoscale. 9, 1285 (2017).

5. A. A. Awad, P. Dürrenfeld, A. Houshang, M. Dvornik, E. Iacocca, R. K. Dumas, J. Åkerman, “Long-range mutual synchronization of spin Hall nano-oscillators”, Nature Phys. 13, 292 (2017).

6. T. Chen, R. K. Dumas, A. Eklund, P. K. Muduli, A. Houshang, A. A. Awad, P. Dürrenfeld, M. G. Malm, A. Rusu, J. Åkerman, “Spin-Torque and Spin-Hall Nano-Oscillators”, Proc. IEEE 104, 1919 (2016).

7. A. Houshang, R. Khymyn, M. Dvornik, R. Ferreira, P. P. Freitas, R. K. Dumas, J. Åkerman, “Evidence of solitonic and propagating spin wave modes in hybrid magnetic tunnel junction spin-torque oscillators”, manuscript in preparation (2017)
Date of Defence: 2017-06-09
Disputation: 9 juni 2017 kl. 9.00 i FB salen, Institutionen för fysik, Origovägen 6B, Göteborg
Degree: Doctor of Philosophy
Publication type: Doctoral thesis
Keywords: Spintronics
driven synchronization
mutual synchronization
spin transfer torque
spin torque oscillator
spin Hall oscillator
magnetic tunnel junctions
hybrid nanocontact
spin wave bullet
propagating spin wave
Brillouin light scattering
Abstract: Spin-torque oscillators (STOs) belong to a novel class of spintronic devices and exhibit a broad operating frequency and high modulation rates. STOs take advantage of several physical phenomena such as giant magnetoresistance (GMR), spin Hal effect (SHE), spin-transfer torque (STT), and tunneling magnetoresistance (TMR) to operate. In this work, it has been attempted to understand and study the excited magnetodynamical modes in three different classes of STOs i.e. nanocontact STOs (NCSTOs), spin... more
ISBN: 978-91-629-0215-5(printed)
Appears in Collections:Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet
Doctoral Theses / Doktorsavhandlingar Institutionen för fysik



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