Vortex ratchet induced by controlled edge roughness
We demonstrate theoretically and experimentally the generation of rectified mean vortex displacement resulting from a controlled difference between the surface barriers at the opposite borders of a superconducting strip. Our investigation focuses on Al superconducting strips where, in one of the two...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/6/063022 |
| _version_ | 1797751675898822656 |
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| author | D Cerbu V N Gladilin J Cuppens J Fritzsche J Tempere J T Devreese V V Moshchalkov A V Silhanek J Van de Vondel |
| author_facet | D Cerbu V N Gladilin J Cuppens J Fritzsche J Tempere J T Devreese V V Moshchalkov A V Silhanek J Van de Vondel |
| author_sort | D Cerbu |
| collection | DOAJ |
| description | We demonstrate theoretically and experimentally the generation of rectified mean vortex displacement resulting from a controlled difference between the surface barriers at the opposite borders of a superconducting strip. Our investigation focuses on Al superconducting strips where, in one of the two sample borders, a saw tooth-like array of micro-indentations has been imprinted. The origin of the vortex ratchet effect is based on the fact that (i) the onset of vortex motion is mainly governed by the entrance/nucleation of vortices and (ii) the current lines bunching produced by the indentations facilitates the entrance/nucleation of vortices. Only for one current direction the indentations are positioned at the side of vortex entry and the onset of the resistive regime is lowered compared to the opposite current direction. This investigation points to the relevance of ubiquitous border effects typically neglected when interpreting vortex ratchet measurements on samples with arrays of local asymmetric pinning sites. |
| first_indexed | 2024-03-12T16:52:00Z |
| format | Article |
| id | doaj.art-cbafe9291d274345b5d11463dbe12702 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:52:00Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-cbafe9291d274345b5d11463dbe127022023-08-08T11:08:46ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115606302210.1088/1367-2630/15/6/063022Vortex ratchet induced by controlled edge roughnessD Cerbu0V N Gladilin1J Cuppens2J Fritzsche3J Tempere4J T Devreese5V V Moshchalkov6A V Silhanek7J Van de Vondel8INPAC—Institute for Nanoscale Physics and Chemistry , KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, BelgiumINPAC—Institute for Nanoscale Physics and Chemistry , KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium; TQC—Theory of Quantum and Complex Systems, Universiteit Antwerpen , Universiteitsplein 1, B-2610 Antwerpen, BelgiumINPAC—Institute for Nanoscale Physics and Chemistry , KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, BelgiumDepartment of Applied Physics, Chalmers University of Technology , SE-412 96 Göteborg, SwedenTQC—Theory of Quantum and Complex Systems, Universiteit Antwerpen , Universiteitsplein 1, B-2610 Antwerpen, BelgiumTQC—Theory of Quantum and Complex Systems, Universiteit Antwerpen , Universiteitsplein 1, B-2610 Antwerpen, BelgiumINPAC—Institute for Nanoscale Physics and Chemistry , KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, BelgiumDépartement de Physique, Université de Liège , Allée du 6 août 17, Bat. B5a, B-4000 Sart Tilman, BelgiumINPAC—Institute for Nanoscale Physics and Chemistry , KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, BelgiumWe demonstrate theoretically and experimentally the generation of rectified mean vortex displacement resulting from a controlled difference between the surface barriers at the opposite borders of a superconducting strip. Our investigation focuses on Al superconducting strips where, in one of the two sample borders, a saw tooth-like array of micro-indentations has been imprinted. The origin of the vortex ratchet effect is based on the fact that (i) the onset of vortex motion is mainly governed by the entrance/nucleation of vortices and (ii) the current lines bunching produced by the indentations facilitates the entrance/nucleation of vortices. Only for one current direction the indentations are positioned at the side of vortex entry and the onset of the resistive regime is lowered compared to the opposite current direction. This investigation points to the relevance of ubiquitous border effects typically neglected when interpreting vortex ratchet measurements on samples with arrays of local asymmetric pinning sites.https://doi.org/10.1088/1367-2630/15/6/063022 |
| spellingShingle | D Cerbu V N Gladilin J Cuppens J Fritzsche J Tempere J T Devreese V V Moshchalkov A V Silhanek J Van de Vondel Vortex ratchet induced by controlled edge roughness New Journal of Physics |
| title | Vortex ratchet induced by controlled edge roughness |
| title_full | Vortex ratchet induced by controlled edge roughness |
| title_fullStr | Vortex ratchet induced by controlled edge roughness |
| title_full_unstemmed | Vortex ratchet induced by controlled edge roughness |
| title_short | Vortex ratchet induced by controlled edge roughness |
| title_sort | vortex ratchet induced by controlled edge roughness |
| url | https://doi.org/10.1088/1367-2630/15/6/063022 |
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