Thickness and magnetic field-tuned superconductor-insulator transitions in a-Nb15Si85

Claire A. Marrache-Kikuchi; H. Aubin; A. Pourret; K. Behnia; L. Bergé; L. Dumoulin; J. Lesueur

doi:10.1063/1.2355026

Thickness and magnetic field-tuned superconductor-insulator transitions in a-Nb₁₅Si₈₅

Claire A. Marrache-Kikuchi, H. Aubin, A. Pourret, K. Behnia, L. Bergé, L. Dumoulin, J. Lesueur

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Results from a study of amorphous superconducting Nb_0.15Si _0.85 thin films are presented. These compounds are subject to a thickness-tuned superconductor-insulator transition at zero-field and, for each given thickness, a magnetic-field tuned superconductor-insulator transition is observed. The field-tuned transition is characterized by an isobestic point (H_c,R_c) that indicates the quantum critical nature of this superconductor-insulator transition and the absence of an intermediate metallic state. Similarly, we find that the thickness-tuned superconductor-insulator transition in zero-field is characterized by a critical thickness d_c. We were thus able to obtain the phase diagram in the (H,d) plane for Nb _0.15Si_0.85.

Original language	English
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	965-966
Number of pages	2
DOIs	https://doi.org/10.1063/1.2355026
Publication status	Published - 1 Dec 2006
Externally published	Yes
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 10 Aug 2006 → 17 Oct 2006

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	10/08/06 → 17/10/06

Keywords

Amorphous films
Quantum phase transition
Superconductor-insulator transition

Access to Document

10.1063/1.2355026

Cite this

Marrache-Kikuchi, C. A., Aubin, H., Pourret, A., Behnia, K., Bergé, L., Dumoulin, L., & Lesueur, J. (2006). Thickness and magnetic field-tuned superconductor-insulator transitions in a-Nb₁₅Si₈₅. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 965-966). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2355026

@inproceedings{ee551ce3bef2404d9c837c408d95d804,

title = "Thickness and magnetic field-tuned superconductor-insulator transitions in a-Nb15Si85",

abstract = "Results from a study of amorphous superconducting Nb0.15Si 0.85 thin films are presented. These compounds are subject to a thickness-tuned superconductor-insulator transition at zero-field and, for each given thickness, a magnetic-field tuned superconductor-insulator transition is observed. The field-tuned transition is characterized by an isobestic point (Hc,Rc) that indicates the quantum critical nature of this superconductor-insulator transition and the absence of an intermediate metallic state. Similarly, we find that the thickness-tuned superconductor-insulator transition in zero-field is characterized by a critical thickness dc. We were thus able to obtain the phase diagram in the (H,d) plane for Nb 0.15Si0.85.",

keywords = "Amorphous films, Quantum phase transition, Superconductor-insulator transition",

author = "Marrache-Kikuchi, \{Claire A.\} and H. Aubin and A. Pourret and K. Behnia and L. Berg{\'e} and L. Dumoulin and J. Lesueur",

year = "2006",

month = dec,

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language = "English",

isbn = "0735403473",

series = "AIP Conference Proceedings",

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Marrache-Kikuchi, CA, Aubin, H, Pourret, A, Behnia, K, Bergé, L, Dumoulin, L & Lesueur, J 2006, Thickness and magnetic field-tuned superconductor-insulator transitions in a-Nb₁₅Si₈₅. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 965-966, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 10/08/06. https://doi.org/10.1063/1.2355026

Thickness and magnetic field-tuned superconductor-insulator transitions in a-Nb₁₅Si₈₅. / Marrache-Kikuchi, Claire A.; Aubin, H.; Pourret, A. et al.
LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. 2006. p. 965-966 (AIP Conference Proceedings; Vol. 850).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - Results from a study of amorphous superconducting Nb0.15Si 0.85 thin films are presented. These compounds are subject to a thickness-tuned superconductor-insulator transition at zero-field and, for each given thickness, a magnetic-field tuned superconductor-insulator transition is observed. The field-tuned transition is characterized by an isobestic point (Hc,Rc) that indicates the quantum critical nature of this superconductor-insulator transition and the absence of an intermediate metallic state. Similarly, we find that the thickness-tuned superconductor-insulator transition in zero-field is characterized by a critical thickness dc. We were thus able to obtain the phase diagram in the (H,d) plane for Nb 0.15Si0.85.

AB - Results from a study of amorphous superconducting Nb0.15Si 0.85 thin films are presented. These compounds are subject to a thickness-tuned superconductor-insulator transition at zero-field and, for each given thickness, a magnetic-field tuned superconductor-insulator transition is observed. The field-tuned transition is characterized by an isobestic point (Hc,Rc) that indicates the quantum critical nature of this superconductor-insulator transition and the absence of an intermediate metallic state. Similarly, we find that the thickness-tuned superconductor-insulator transition in zero-field is characterized by a critical thickness dc. We were thus able to obtain the phase diagram in the (H,d) plane for Nb 0.15Si0.85.

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KW - Superconductor-insulator transition

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