Cargando…
Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors
The determination of the pairing symmetry is one of the most crucial issues for the iron-based superconductors, for which various scenarios are discussed controversially. Non-magnetic impurity substitution is one of the most promising approaches to address the issue, because the pair-breaking mechan...
Autores principales: | , , , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506518/ https://www.ncbi.nlm.nih.gov/pubmed/26139568 http://dx.doi.org/10.1038/ncomms8614 |
_version_ | 1782381699431137280 |
---|---|
author | Li, Jun Ji, Min Schwarz, Tobias Ke, Xiaoxing Van Tendeloo, Gustaaf Yuan, Jie Pereira, Paulo J. Huang, Ya Zhang, Gufei Feng, Hai-Luke Yuan, Ya-Hua Hatano, Takeshi Kleiner, Reinhold Koelle, Dieter Chibotaru, Liviu F. Yamaura, Kazunari Wang, Hua-Bing Wu, Pei-Heng Takayama-Muromachi, Eiji Vanacken, Johan Moshchalkov, Victor V. |
author_facet | Li, Jun Ji, Min Schwarz, Tobias Ke, Xiaoxing Van Tendeloo, Gustaaf Yuan, Jie Pereira, Paulo J. Huang, Ya Zhang, Gufei Feng, Hai-Luke Yuan, Ya-Hua Hatano, Takeshi Kleiner, Reinhold Koelle, Dieter Chibotaru, Liviu F. Yamaura, Kazunari Wang, Hua-Bing Wu, Pei-Heng Takayama-Muromachi, Eiji Vanacken, Johan Moshchalkov, Victor V. |
author_sort | Li, Jun |
collection | PubMed |
description | The determination of the pairing symmetry is one of the most crucial issues for the iron-based superconductors, for which various scenarios are discussed controversially. Non-magnetic impurity substitution is one of the most promising approaches to address the issue, because the pair-breaking mechanism from the non-magnetic impurities should be different for various models. Previous substitution experiments demonstrated that the non-magnetic zinc can suppress the superconductivity of various iron-based superconductors. Here we demonstrate the local destruction of superconductivity by non-magnetic zinc impurities in Ba(0.5)K(0.5)Fe(2)As(2) by exploring phase-slip phenomena in a mesoscopic structure with 119 × 102 nm(2) cross-section. The impurities suppress superconductivity in a three-dimensional ‘Swiss cheese'-like pattern with in-plane and out-of-plane characteristic lengths slightly below ∼1.34 nm. This causes the superconducting order parameter to vary along abundant narrow channels with effective cross-section of a few square nanometres. The local destruction of superconductivity can be related to Cooper pair breaking by non-magnetic impurities. |
format | Online Article Text |
id | pubmed-4506518 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-45065182015-07-21 Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors Li, Jun Ji, Min Schwarz, Tobias Ke, Xiaoxing Van Tendeloo, Gustaaf Yuan, Jie Pereira, Paulo J. Huang, Ya Zhang, Gufei Feng, Hai-Luke Yuan, Ya-Hua Hatano, Takeshi Kleiner, Reinhold Koelle, Dieter Chibotaru, Liviu F. Yamaura, Kazunari Wang, Hua-Bing Wu, Pei-Heng Takayama-Muromachi, Eiji Vanacken, Johan Moshchalkov, Victor V. Nat Commun Article The determination of the pairing symmetry is one of the most crucial issues for the iron-based superconductors, for which various scenarios are discussed controversially. Non-magnetic impurity substitution is one of the most promising approaches to address the issue, because the pair-breaking mechanism from the non-magnetic impurities should be different for various models. Previous substitution experiments demonstrated that the non-magnetic zinc can suppress the superconductivity of various iron-based superconductors. Here we demonstrate the local destruction of superconductivity by non-magnetic zinc impurities in Ba(0.5)K(0.5)Fe(2)As(2) by exploring phase-slip phenomena in a mesoscopic structure with 119 × 102 nm(2) cross-section. The impurities suppress superconductivity in a three-dimensional ‘Swiss cheese'-like pattern with in-plane and out-of-plane characteristic lengths slightly below ∼1.34 nm. This causes the superconducting order parameter to vary along abundant narrow channels with effective cross-section of a few square nanometres. The local destruction of superconductivity can be related to Cooper pair breaking by non-magnetic impurities. Nature Pub. Group 2015-07-03 /pmc/articles/PMC4506518/ /pubmed/26139568 http://dx.doi.org/10.1038/ncomms8614 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Li, Jun Ji, Min Schwarz, Tobias Ke, Xiaoxing Van Tendeloo, Gustaaf Yuan, Jie Pereira, Paulo J. Huang, Ya Zhang, Gufei Feng, Hai-Luke Yuan, Ya-Hua Hatano, Takeshi Kleiner, Reinhold Koelle, Dieter Chibotaru, Liviu F. Yamaura, Kazunari Wang, Hua-Bing Wu, Pei-Heng Takayama-Muromachi, Eiji Vanacken, Johan Moshchalkov, Victor V. Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
title | Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
title_full | Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
title_fullStr | Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
title_full_unstemmed | Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
title_short | Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
title_sort | local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506518/ https://www.ncbi.nlm.nih.gov/pubmed/26139568 http://dx.doi.org/10.1038/ncomms8614 |
work_keys_str_mv | AT lijun localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT jimin localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT schwarztobias localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT kexiaoxing localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT vantendeloogustaaf localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT yuanjie localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT pereirapauloj localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT huangya localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT zhanggufei localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT fenghailuke localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT yuanyahua localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT hatanotakeshi localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT kleinerreinhold localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT koelledieter localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT chibotaruliviuf localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT yamaurakazunari localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT wanghuabing localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT wupeiheng localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT takayamamuromachieiji localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT vanackenjohan localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors AT moshchalkovvictorv localdestructionofsuperconductivitybynonmagneticimpuritiesinmesoscopicironbasedsuperconductors |