Effect of interstitial impurities on the field dependent microwave surface resistance of niobium

Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. This effect is attributed to the lowering of the Mattis-Bardeen surface resistance with increasing accelera...
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Autor*in:	Martinello, M [verfasserIn] Grassellino, A Checchin, M Romanenko, A Melnychuk, O Sergatskov, D. A Posen, S Zasadzinski, J. F

Format:	Artikel
Sprache:	Englisch

Erschienen:	2016

Rechteinformationen:	Nutzungsrecht: © Author(s)

Schlagwörter:	Physics Accelerator Physics

Übergeordnetes Werk:	Enthalten in: Applied physics letters - Melville, NY : AIP, 1962, 109(2016), 6, Seite 62601
Übergeordnetes Werk:	volume:109 ; year:2016 ; number:6 ; pages:62601

Links:	Volltext Link aufrufen Link aufrufen

DOI / URN:	10.1063/1.4960801

Katalog-ID:	OLC1981206523

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520			\|a Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. This effect is attributed to the lowering of the Mattis-Bardeen surface resistance with increasing accelerating field; however, the microscopic origin of this phenomenon is poorly understood. Meanwhile, an enhancement of the sensitivity to trapped magnetic field is typically observed for such cavities. In this paper, we conduct a systematic study on these different components contributing to the total surface resistance as a function of different levels of dissolved nitrogen, in comparison with standard surface treatments for niobium resonators. Adding these results together, we are able to show which is the optimum surface treatment that maximizes the Q-factor of superconducting niobium resonators as a function of expected trapped magnetic field in the cavity walls. These results also provide insights on the physics behind the change in the field dependence of the Mattis-Bardeen surface resistance, and of the trapped magnetic vortex induced losses in superconducting niobium resonators.
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title	Effect of interstitial impurities on the field dependent microwave surface resistance of niobium
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title_full	Effect of interstitial impurities on the field dependent microwave surface resistance of niobium
author_sort	Martinello, M
journal	Applied physics letters
journalStr	Applied physics letters
lang_code	eng
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container_start_page	62601
author_browse	Martinello, M
container_volume	109
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author-letter	Martinello, M
doi_str_mv	10.1063/1.4960801
dewey-full	530
title_sort	effect of interstitial impurities on the field dependent microwave surface resistance of niobium
title_auth	Effect of interstitial impurities on the field dependent microwave surface resistance of niobium
abstract	Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. This effect is attributed to the lowering of the Mattis-Bardeen surface resistance with increasing accelerating field; however, the microscopic origin of this phenomenon is poorly understood. Meanwhile, an enhancement of the sensitivity to trapped magnetic field is typically observed for such cavities. In this paper, we conduct a systematic study on these different components contributing to the total surface resistance as a function of different levels of dissolved nitrogen, in comparison with standard surface treatments for niobium resonators. Adding these results together, we are able to show which is the optimum surface treatment that maximizes the Q-factor of superconducting niobium resonators as a function of expected trapped magnetic field in the cavity walls. These results also provide insights on the physics behind the change in the field dependence of the Mattis-Bardeen surface resistance, and of the trapped magnetic vortex induced losses in superconducting niobium resonators.
abstractGer	Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. This effect is attributed to the lowering of the Mattis-Bardeen surface resistance with increasing accelerating field; however, the microscopic origin of this phenomenon is poorly understood. Meanwhile, an enhancement of the sensitivity to trapped magnetic field is typically observed for such cavities. In this paper, we conduct a systematic study on these different components contributing to the total surface resistance as a function of different levels of dissolved nitrogen, in comparison with standard surface treatments for niobium resonators. Adding these results together, we are able to show which is the optimum surface treatment that maximizes the Q-factor of superconducting niobium resonators as a function of expected trapped magnetic field in the cavity walls. These results also provide insights on the physics behind the change in the field dependence of the Mattis-Bardeen surface resistance, and of the trapped magnetic vortex induced losses in superconducting niobium resonators.
abstract_unstemmed	Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. This effect is attributed to the lowering of the Mattis-Bardeen surface resistance with increasing accelerating field; however, the microscopic origin of this phenomenon is poorly understood. Meanwhile, an enhancement of the sensitivity to trapped magnetic field is typically observed for such cavities. In this paper, we conduct a systematic study on these different components contributing to the total surface resistance as a function of different levels of dissolved nitrogen, in comparison with standard surface treatments for niobium resonators. Adding these results together, we are able to show which is the optimum surface treatment that maximizes the Q-factor of superconducting niobium resonators as a function of expected trapped magnetic field in the cavity walls. These results also provide insights on the physics behind the change in the field dependence of the Mattis-Bardeen surface resistance, and of the trapped magnetic vortex induced losses in superconducting niobium resonators.
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container_issue	6
title_short	Effect of interstitial impurities on the field dependent microwave surface resistance of niobium
url	http://dx.doi.org/10.1063/1.4960801 http://arxiv.org/abs/1606.04174
remote_bool	false
author2	Grassellino, A Checchin, M Romanenko, A Melnychuk, O Sergatskov, D. A Posen, S Zasadzinski, J. F
author2Str	Grassellino, A Checchin, M Romanenko, A Melnychuk, O Sergatskov, D. A Posen, S Zasadzinski, J. F
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doi_str	10.1063/1.4960801
up_date	2024-07-04T04:28:12.909Z
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