Cargando…

Sensitivity of the superconducting state in thin films

For more than two decades, there have been reports on an unexpected metallic state separating the established superconducting and insulating phases of thin-film superconductors. To date, no theoretical explanation has been able to fully capture the existence of such a state for the large variety of...

Descripción completa

Detalles Bibliográficos
Autores principales: Tamir, I., Benyamini, A., Telford, E. J., Gorniaczyk, F., Doron, A., Levinson, T., Wang, D., Gay, F., Sacépé, B., Hone, J., Watanabe, K., Taniguchi, T., Dean, C. R., Pasupathy, A. N., Shahar, D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6420316/
https://www.ncbi.nlm.nih.gov/pubmed/30899781
http://dx.doi.org/10.1126/sciadv.aau3826
_version_ 1783404069753192448
author Tamir, I.
Benyamini, A.
Telford, E. J.
Gorniaczyk, F.
Doron, A.
Levinson, T.
Wang, D.
Gay, F.
Sacépé, B.
Hone, J.
Watanabe, K.
Taniguchi, T.
Dean, C. R.
Pasupathy, A. N.
Shahar, D.
author_facet Tamir, I.
Benyamini, A.
Telford, E. J.
Gorniaczyk, F.
Doron, A.
Levinson, T.
Wang, D.
Gay, F.
Sacépé, B.
Hone, J.
Watanabe, K.
Taniguchi, T.
Dean, C. R.
Pasupathy, A. N.
Shahar, D.
author_sort Tamir, I.
collection PubMed
description For more than two decades, there have been reports on an unexpected metallic state separating the established superconducting and insulating phases of thin-film superconductors. To date, no theoretical explanation has been able to fully capture the existence of such a state for the large variety of superconductors exhibiting it. Here, we show that for two very different thin-film superconductors, amorphous indium oxide and a single crystal of 2H-NbSe(2), this metallic state can be eliminated by adequately filtering external radiation. Our results show that the appearance of temperature-independent, metallic-like transport at low temperatures is sufficiently described by the extreme sensitivity of these superconducting films to external perturbations. We relate this sensitivity to the theoretical observation that, in two dimensions, superconductivity is only marginally stable.
format Online
Article
Text
id pubmed-6420316
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher American Association for the Advancement of Science
record_format MEDLINE/PubMed
spelling pubmed-64203162019-03-21 Sensitivity of the superconducting state in thin films Tamir, I. Benyamini, A. Telford, E. J. Gorniaczyk, F. Doron, A. Levinson, T. Wang, D. Gay, F. Sacépé, B. Hone, J. Watanabe, K. Taniguchi, T. Dean, C. R. Pasupathy, A. N. Shahar, D. Sci Adv Research Articles For more than two decades, there have been reports on an unexpected metallic state separating the established superconducting and insulating phases of thin-film superconductors. To date, no theoretical explanation has been able to fully capture the existence of such a state for the large variety of superconductors exhibiting it. Here, we show that for two very different thin-film superconductors, amorphous indium oxide and a single crystal of 2H-NbSe(2), this metallic state can be eliminated by adequately filtering external radiation. Our results show that the appearance of temperature-independent, metallic-like transport at low temperatures is sufficiently described by the extreme sensitivity of these superconducting films to external perturbations. We relate this sensitivity to the theoretical observation that, in two dimensions, superconductivity is only marginally stable. American Association for the Advancement of Science 2019-03-15 /pmc/articles/PMC6420316/ /pubmed/30899781 http://dx.doi.org/10.1126/sciadv.aau3826 Text en Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Tamir, I.
Benyamini, A.
Telford, E. J.
Gorniaczyk, F.
Doron, A.
Levinson, T.
Wang, D.
Gay, F.
Sacépé, B.
Hone, J.
Watanabe, K.
Taniguchi, T.
Dean, C. R.
Pasupathy, A. N.
Shahar, D.
Sensitivity of the superconducting state in thin films
title Sensitivity of the superconducting state in thin films
title_full Sensitivity of the superconducting state in thin films
title_fullStr Sensitivity of the superconducting state in thin films
title_full_unstemmed Sensitivity of the superconducting state in thin films
title_short Sensitivity of the superconducting state in thin films
title_sort sensitivity of the superconducting state in thin films
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6420316/
https://www.ncbi.nlm.nih.gov/pubmed/30899781
http://dx.doi.org/10.1126/sciadv.aau3826
work_keys_str_mv AT tamiri sensitivityofthesuperconductingstateinthinfilms
AT benyaminia sensitivityofthesuperconductingstateinthinfilms
AT telfordej sensitivityofthesuperconductingstateinthinfilms
AT gorniaczykf sensitivityofthesuperconductingstateinthinfilms
AT dorona sensitivityofthesuperconductingstateinthinfilms
AT levinsont sensitivityofthesuperconductingstateinthinfilms
AT wangd sensitivityofthesuperconductingstateinthinfilms
AT gayf sensitivityofthesuperconductingstateinthinfilms
AT sacepeb sensitivityofthesuperconductingstateinthinfilms
AT honej sensitivityofthesuperconductingstateinthinfilms
AT watanabek sensitivityofthesuperconductingstateinthinfilms
AT taniguchit sensitivityofthesuperconductingstateinthinfilms
AT deancr sensitivityofthesuperconductingstateinthinfilms
AT pasupathyan sensitivityofthesuperconductingstateinthinfilms
AT shahard sensitivityofthesuperconductingstateinthinfilms