Inertial displacement of a domain wall excited by ultra-short circularly polarized laser pulses
Domain wall motion driven by ultra-short laser pulses is a prerequisite for envisaged low-power spintronics combining storage of information in magnetoelectronic devices with high speed and long distance transmission of information encoded in circularly polarized light. Here we demonstrate the conve...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English English |
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Nature Publishing Group
2017
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| Online Access: | https://eprints.nottingham.ac.uk/44289/ |
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| author | Janda, T. Roy, P.E. Otxoa, R.M. Soban, Z. Ramsay, A. Irvine, A.C. Trojánek, F. Surynek, M. Campion, R.P. Gallagher, B.L. Němec, P. Jungwirth, T. Wunderlich, J. |
| author_facet | Janda, T. Roy, P.E. Otxoa, R.M. Soban, Z. Ramsay, A. Irvine, A.C. Trojánek, F. Surynek, M. Campion, R.P. Gallagher, B.L. Němec, P. Jungwirth, T. Wunderlich, J. |
| author_sort | Janda, T. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Domain wall motion driven by ultra-short laser pulses is a prerequisite for envisaged low-power spintronics combining storage of information in magnetoelectronic devices with high speed and long distance transmission of information encoded in circularly polarized light. Here we demonstrate the conversion of the circular polarization of incident femtosecond laser pulses into inertial displacement of a domain wall in a ferromagnetic semiconductor. In our study we combine electrical measurements and magneto-optical imaging of the domain wall displacement with micromagnetic simulations. The optical spin transfer torque acts over a picosecond recombination time of the spin polarized photo-carriers which only leads to a deformation of the internal domain wall structure. We show that subsequent depinning and micro-meter distance displacement without an applied magnetic field or any other external stimuli can only occur due to the inertia of the domain wall. |
| first_indexed | 2025-11-14T19:55:02Z |
| format | Article |
| id | nottingham-44289 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T19:55:02Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
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| spelling | nottingham-442892018-06-12T06:00:26Z https://eprints.nottingham.ac.uk/44289/ Inertial displacement of a domain wall excited by ultra-short circularly polarized laser pulses Janda, T. Roy, P.E. Otxoa, R.M. Soban, Z. Ramsay, A. Irvine, A.C. Trojánek, F. Surynek, M. Campion, R.P. Gallagher, B.L. Němec, P. Jungwirth, T. Wunderlich, J. Domain wall motion driven by ultra-short laser pulses is a prerequisite for envisaged low-power spintronics combining storage of information in magnetoelectronic devices with high speed and long distance transmission of information encoded in circularly polarized light. Here we demonstrate the conversion of the circular polarization of incident femtosecond laser pulses into inertial displacement of a domain wall in a ferromagnetic semiconductor. In our study we combine electrical measurements and magneto-optical imaging of the domain wall displacement with micromagnetic simulations. The optical spin transfer torque acts over a picosecond recombination time of the spin polarized photo-carriers which only leads to a deformation of the internal domain wall structure. We show that subsequent depinning and micro-meter distance displacement without an applied magnetic field or any other external stimuli can only occur due to the inertia of the domain wall. Nature Publishing Group 2017-05-17 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/44289/1/DW_inertia_resub_rev_170226.pdf application/pdf en cc_by https://eprints.nottingham.ac.uk/44289/7/Domain%20ncomms15226.pdf Janda, T., Roy, P.E., Otxoa, R.M., Soban, Z., Ramsay, A., Irvine, A.C., Trojánek, F., Surynek, M., Campion, R.P., Gallagher, B.L., Němec, P., Jungwirth, T. and Wunderlich, J. (2017) Inertial displacement of a domain wall excited by ultra-short circularly polarized laser pulses. Nature Communications, 8 . 15226/1-15226/7. ISSN 2041-1723 Electronic and spintronic devices Spintronics Ultrafast photonics http://www.nature.com/articles/ncomms15226 doi:10.1038/ncomms15226 doi:10.1038/ncomms15226 |
| spellingShingle | Electronic and spintronic devices Spintronics Ultrafast photonics Janda, T. Roy, P.E. Otxoa, R.M. Soban, Z. Ramsay, A. Irvine, A.C. Trojánek, F. Surynek, M. Campion, R.P. Gallagher, B.L. Němec, P. Jungwirth, T. Wunderlich, J. Inertial displacement of a domain wall excited by ultra-short circularly polarized laser pulses |
| title | Inertial displacement of a domain wall excited by
ultra-short circularly polarized laser pulses |
| title_full | Inertial displacement of a domain wall excited by
ultra-short circularly polarized laser pulses |
| title_fullStr | Inertial displacement of a domain wall excited by
ultra-short circularly polarized laser pulses |
| title_full_unstemmed | Inertial displacement of a domain wall excited by
ultra-short circularly polarized laser pulses |
| title_short | Inertial displacement of a domain wall excited by
ultra-short circularly polarized laser pulses |
| title_sort | inertial displacement of a domain wall excited by
ultra-short circularly polarized laser pulses |
| topic | Electronic and spintronic devices Spintronics Ultrafast photonics |
| url | https://eprints.nottingham.ac.uk/44289/ https://eprints.nottingham.ac.uk/44289/ https://eprints.nottingham.ac.uk/44289/ |