Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice
We investigate the magnetotransport properties of connected kagome artificial spin ice networks composed of permalloy nanowires. Our data show clear evidence of magnetic switching among the wires, both in the longitudinal and transverse magnetoresistance. An unusual asymmetry with field sweep direct...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/2/023047 |
| _version_ | 1797751243110612992 |
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| author | B L Le D W Rench R Misra L O’Brien C Leighton N Samarth P Schiffer |
| author_facet | B L Le D W Rench R Misra L O’Brien C Leighton N Samarth P Schiffer |
| author_sort | B L Le |
| collection | DOAJ |
| description | We investigate the magnetotransport properties of connected kagome artificial spin ice networks composed of permalloy nanowires. Our data show clear evidence of magnetic switching among the wires, both in the longitudinal and transverse magnetoresistance. An unusual asymmetry with field sweep direction appears at temperatures below about 20 K that appears to be associated with exchange bias resulting from surface oxidation of permalloy, and which disappears in alumina-capped samples. These results demonstrate that exchange bias is a phenomenon that must be considered in understanding the physics of such artificial spin ice systems, and that opens up new possibilities for their control. |
| first_indexed | 2024-03-12T16:44:39Z |
| format | Article |
| id | doaj.art-9392084f72734917a4eef9d7802ebed9 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:44:39Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-9392084f72734917a4eef9d7802ebed92023-08-08T14:17:02ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117202304710.1088/1367-2630/17/2/023047Effects of exchange bias on magnetotransport in permalloy kagome artificial spin iceB L Le0D W Rench1R Misra2L O’Brien3C Leighton4N Samarth5P Schiffer6Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign , Urbana, IL 61801, USADepartment of Physics and Materials Research Institute, Pennsylvania State University , University Park, PA 16802, USADepartment of Physics and Materials Research Institute, Pennsylvania State University , University Park, PA 16802, USADepartment of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, MN 55455, USA; Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, UKDepartment of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, MN 55455, USADepartment of Physics and Materials Research Institute, Pennsylvania State University , University Park, PA 16802, USADepartment of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign , Urbana, IL 61801, USAWe investigate the magnetotransport properties of connected kagome artificial spin ice networks composed of permalloy nanowires. Our data show clear evidence of magnetic switching among the wires, both in the longitudinal and transverse magnetoresistance. An unusual asymmetry with field sweep direction appears at temperatures below about 20 K that appears to be associated with exchange bias resulting from surface oxidation of permalloy, and which disappears in alumina-capped samples. These results demonstrate that exchange bias is a phenomenon that must be considered in understanding the physics of such artificial spin ice systems, and that opens up new possibilities for their control.https://doi.org/10.1088/1367-2630/17/2/023047artificial spin iceexchange biasmagnetotransport |
| spellingShingle | B L Le D W Rench R Misra L O’Brien C Leighton N Samarth P Schiffer Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice New Journal of Physics artificial spin ice exchange bias magnetotransport |
| title | Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice |
| title_full | Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice |
| title_fullStr | Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice |
| title_full_unstemmed | Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice |
| title_short | Effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice |
| title_sort | effects of exchange bias on magnetotransport in permalloy kagome artificial spin ice |
| topic | artificial spin ice exchange bias magnetotransport |
| url | https://doi.org/10.1088/1367-2630/17/2/023047 |
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