Investigating a phase conjugate mirror for magnon-based computing
<p>This thesis reports on the realisation of a phase conjugate spin wave device employing a four-wave mixing process. Unexpected nonlinear behaviour was revealed in further experiments which are reported on latterly.</p> <p>Chapter 1 introduces the motivation for this thesis: the...
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| Format: | Thesis |
| Language: | English |
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2019
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| _version_ | 1826274531473358848 |
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| author | Inglis, A |
| author2 | Gregg, J |
| author_facet | Gregg, J Inglis, A |
| author_sort | Inglis, A |
| collection | OXFORD |
| description | <p>This thesis reports on the realisation of a phase conjugate spin wave device employing a four-wave mixing process. Unexpected nonlinear behaviour was revealed in further experiments which are reported on latterly.</p>
<p>Chapter 1 introduces the motivation for this thesis: the need to avoid the stagnation of technological progress by investigating alternative computing paradigms, namely magnon-based computing. An introduction to the field of magnonics and magnon behaviour is presented, followed by a brief introduction to nonlinear behaviour.</p>
<p>Chapter 2 builds on the general description of spin waves and introduces the concept of phase conjugation. Following an optical treatment of phase conjugation via four- wave mixing, a theoretical description of the phase conjugation in the spin wave regime is presented.</p>
<p>Chapter 3 details the experimental materials and methods employed in the succeeding chapters. A description of the antenna design and fabrication processes is presented along with a description of the key experimental equipment.</p>
<p>Chapter 4 describes an experimental investigation concerning the realisation of a phase conjugate mirror via four-wave mixing created in a spin wave system. It is demonstrated through experiments and simulations that the mirror is at its most reflective when a standing spin wave is present across the width of the magnon waveguide.</p>
<p>Chapter 5 investigates a time-domain fractal arising from the spatio-temporally periodic potential that occurs as a result of the standing wave. The onset of great- granddaughter fractal modes is observed and the frequency dependence of the amplitude of the fractal modes is discussed.</p>
<p>Chapter 6 offers concluding remarks, and considers future experiments that may develop the field.</p> |
| first_indexed | 2024-03-06T22:44:51Z |
| format | Thesis |
| id | oxford-uuid:5cd14d3b-ee28-4dca-9383-96a9d3114a0b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:44:51Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | oxford-uuid:5cd14d3b-ee28-4dca-9383-96a9d3114a0b2022-03-26T17:30:34ZInvestigating a phase conjugate mirror for magnon-based computingThesishttp://purl.org/coar/resource_type/c_db06uuid:5cd14d3b-ee28-4dca-9383-96a9d3114a0bCondensed matterTwo-dimensional magnetsMesoscopic phenomena (Physics)EnglishHyrax Deposit2019Inglis, AGregg, J<p>This thesis reports on the realisation of a phase conjugate spin wave device employing a four-wave mixing process. Unexpected nonlinear behaviour was revealed in further experiments which are reported on latterly.</p> <p>Chapter 1 introduces the motivation for this thesis: the need to avoid the stagnation of technological progress by investigating alternative computing paradigms, namely magnon-based computing. An introduction to the field of magnonics and magnon behaviour is presented, followed by a brief introduction to nonlinear behaviour.</p> <p>Chapter 2 builds on the general description of spin waves and introduces the concept of phase conjugation. Following an optical treatment of phase conjugation via four- wave mixing, a theoretical description of the phase conjugation in the spin wave regime is presented.</p> <p>Chapter 3 details the experimental materials and methods employed in the succeeding chapters. A description of the antenna design and fabrication processes is presented along with a description of the key experimental equipment.</p> <p>Chapter 4 describes an experimental investigation concerning the realisation of a phase conjugate mirror via four-wave mixing created in a spin wave system. It is demonstrated through experiments and simulations that the mirror is at its most reflective when a standing spin wave is present across the width of the magnon waveguide.</p> <p>Chapter 5 investigates a time-domain fractal arising from the spatio-temporally periodic potential that occurs as a result of the standing wave. The onset of great- granddaughter fractal modes is observed and the frequency dependence of the amplitude of the fractal modes is discussed.</p> <p>Chapter 6 offers concluding remarks, and considers future experiments that may develop the field.</p> |
| spellingShingle | Condensed matter Two-dimensional magnets Mesoscopic phenomena (Physics) Inglis, A Investigating a phase conjugate mirror for magnon-based computing |
| title | Investigating a phase conjugate mirror for magnon-based computing |
| title_full | Investigating a phase conjugate mirror for magnon-based computing |
| title_fullStr | Investigating a phase conjugate mirror for magnon-based computing |
| title_full_unstemmed | Investigating a phase conjugate mirror for magnon-based computing |
| title_short | Investigating a phase conjugate mirror for magnon-based computing |
| title_sort | investigating a phase conjugate mirror for magnon based computing |
| topic | Condensed matter Two-dimensional magnets Mesoscopic phenomena (Physics) |
| work_keys_str_mv | AT inglisa investigatingaphaseconjugatemirrorformagnonbasedcomputing |