Mapping the intrinsic photocurrent streamlines through micromagnetic heterostructure devices
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arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2020
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| _version_ | 1866909139912884224 |
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| author | Mayes, Morgan Farahmand, Farima Grossnickle, Maxwell Lohmann, Mark Aldosary, Mohammed Li, Junxue Aji, Vivek Shi, Jing Song, Justin C. W. Gabor, Nathaniel M. |
| author_facet | Mayes, Morgan Farahmand, Farima Grossnickle, Maxwell Lohmann, Mark Aldosary, Mohammed Li, Junxue Aji, Vivek Shi, Jing Song, Justin C. W. Gabor, Nathaniel M. |
| contents | Like air flowing over a wing, optimizing the flow of electronic charge is essential to the operation of nanoscale devices. Unfortunately, the delicate interplay of charge, spin, and heat in complex devices has precluded detailed imaging of charge flow. Here, we report on the visualization of intrinsic charge current streamlines through yttrium iron garnet micromagnetic heterostructures. Scanning photovoltage microscopy of precisely designed devices leads to striking spatial patterns, with prominent photovoltage features emerging in corners and narrow constrictions. These patterns, which evolve continuously with rotation of an external magnetic field, enable rich spatial mapping of fluid-like flow. Taking inspiration from aerodynamic Clark Y airfoils, we engineer micromagnetic wing shaped devices, called electrofoils, which allow us to precisely contort, compress and decompress flowlines of electronic charge.120 (39) e2221815120 |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2002_07902 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Mapping the intrinsic photocurrent streamlines through micromagnetic heterostructure devices Mayes, Morgan Farahmand, Farima Grossnickle, Maxwell Lohmann, Mark Aldosary, Mohammed Li, Junxue Aji, Vivek Shi, Jing Song, Justin C. W. Gabor, Nathaniel M. Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons Like air flowing over a wing, optimizing the flow of electronic charge is essential to the operation of nanoscale devices. Unfortunately, the delicate interplay of charge, spin, and heat in complex devices has precluded detailed imaging of charge flow. Here, we report on the visualization of intrinsic charge current streamlines through yttrium iron garnet micromagnetic heterostructures. Scanning photovoltage microscopy of precisely designed devices leads to striking spatial patterns, with prominent photovoltage features emerging in corners and narrow constrictions. These patterns, which evolve continuously with rotation of an external magnetic field, enable rich spatial mapping of fluid-like flow. Taking inspiration from aerodynamic Clark Y airfoils, we engineer micromagnetic wing shaped devices, called electrofoils, which allow us to precisely contort, compress and decompress flowlines of electronic charge.120 (39) e2221815120 |
| title | Mapping the intrinsic photocurrent streamlines through micromagnetic heterostructure devices |
| topic | Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2002.07902 |