Vortex matching at 6 T in YBa$_2$Cu$_3$O$_{7-δ}$ thin films by imprinting a 20 nm-periodic pinning array with a focused helium ion beam
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866911961531285504 |
|---|---|
| author | Karrer, Max Aichner, Bernd Wurster, Katja Magén, César Schmid, Christoph Hutt, Robin Budinská, Barbora Dobrovolskiy, Oleksandr V. Kleiner, Reinhold Lang, Wolfgang Goldobin, Edward Koelle, Dieter |
| author_facet | Karrer, Max Aichner, Bernd Wurster, Katja Magén, César Schmid, Christoph Hutt, Robin Budinská, Barbora Dobrovolskiy, Oleksandr V. Kleiner, Reinhold Lang, Wolfgang Goldobin, Edward Koelle, Dieter |
| contents | Controlled engineering of vortex pinning sites in copper-oxide superconductors is a critical issue in manufacturing devices based on magnetic flux quanta. To address this, we employed a focused He-ion beam (He-FIB) to irradiate thin YBa$_2$Cu$_3$O$_{7-δ}$ films and create ultradense hexagonal arrays of defects with lattice spacings as small as 20 nm. Critical current and magnetoresistance measurements demonstrate efficient pinning by an unprecedentedly high matching field of 6 T visible in a huge temperature range from the critical temperature $T_c$ down to 2 K. These results show that He-FIB irradiation provides excellent opportunities for the development and application of superconducting fluxonic devices based on Abrikosov vortices. In particular, our findings suggest that such devices can operate at temperatures far below $T_c$, where superconductivity is robust. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_05382 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vortex matching at 6 T in YBa$_2$Cu$_3$O$_{7-δ}$ thin films by imprinting a 20 nm-periodic pinning array with a focused helium ion beam Karrer, Max Aichner, Bernd Wurster, Katja Magén, César Schmid, Christoph Hutt, Robin Budinská, Barbora Dobrovolskiy, Oleksandr V. Kleiner, Reinhold Lang, Wolfgang Goldobin, Edward Koelle, Dieter Superconductivity Materials Science Controlled engineering of vortex pinning sites in copper-oxide superconductors is a critical issue in manufacturing devices based on magnetic flux quanta. To address this, we employed a focused He-ion beam (He-FIB) to irradiate thin YBa$_2$Cu$_3$O$_{7-δ}$ films and create ultradense hexagonal arrays of defects with lattice spacings as small as 20 nm. Critical current and magnetoresistance measurements demonstrate efficient pinning by an unprecedentedly high matching field of 6 T visible in a huge temperature range from the critical temperature $T_c$ down to 2 K. These results show that He-FIB irradiation provides excellent opportunities for the development and application of superconducting fluxonic devices based on Abrikosov vortices. In particular, our findings suggest that such devices can operate at temperatures far below $T_c$, where superconductivity is robust. |
| title | Vortex matching at 6 T in YBa$_2$Cu$_3$O$_{7-δ}$ thin films by imprinting a 20 nm-periodic pinning array with a focused helium ion beam |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2404.05382 |