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Scientific paper - Original scientific paper
Microwave response of thin niobium films under perpendicular static magnetic fields
Physical review B: Condensed matter and materials physics, 74 (2006), 10; 104501. https://doi.org/10.1103/PhysRevB.74.104501
Janjušević, Dragan; Grbić, Mihael Srđan; Požek, Miroslav; Dulčić, Antonije; Paar, Dalibor; Nebendahl, Bernd; Wagner, Thomas

Institutional repository: Repository of the Faculty of Science

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Janjušević, D., Grbić, M. S., Požek, M., Dulčić, A., Paar, D., Nebendahl, B. & Wagner, T. (2006). Microwave response of thin niobium films under perpendicular static magnetic fields. Physical review B: Condensed matter and materials physics, 74. (10). doi: 10.1103/PhysRevB.74.104501

Janjušević, Dragan, et al. "Microwave response of thin niobium films under perpendicular static magnetic fields." Physical review B: Condensed matter and materials physics, vol. 74, no. 10, 2006. https://doi.org/10.1103/PhysRevB.74.104501

Janjušević, Dragan, Mihael Srđan Grbić, Miroslav Požek, Antonije Dulčić, Dalibor Paar, Bernd Nebendahl and Thomas Wagner. "Microwave response of thin niobium films under perpendicular static magnetic fields." Physical review B: Condensed matter and materials physics 74, no. 10 (2006). https://doi.org/10.1103/PhysRevB.74.104501

Janjušević, D., et al. (2006) 'Microwave response of thin niobium films under perpendicular static magnetic fields', Physical review B: Condensed matter and materials physics, 74(10). doi: 10.1103/PhysRevB.74.104501

Janjušević D, Grbić MS, Požek M, Dulčić A, Paar D, Nebendahl B, and sur.. Microwave response of thin niobium films under perpendicular static magnetic fields. Physical review B: Condensed matter and materials physics [Internet]. 2006 [cited 2024 November 22];74(10). doi: 10.1103/PhysRevB.74.104501

D. Janjušević, et al., "Microwave response of thin niobium films under perpendicular static magnetic fields", Physical review B: Condensed matter and materials physics, vol. 74, no. 10, 2006. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:920247. [Accessed: 22 November 2024]

Metadata
Title (english)Microwave response of thin niobium films under perpendicular static magnetic fields
AuthorDragan Janjušević
AuthorMihael Srđan Grbić
AuthorMiroslav Požek
AuthorAntonije Dulčić
AuthorDalibor Paar
AuthorBernd Nebendahl
AuthorThomas Wagner
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The microwave response of high quality niobium films in a perpendicular static magnetic field has been investigated. The complex frequency shift was measured up to the upper critical fields. The data have been analyzed by the effective conductivity model for the type-II superconductors in the mixed state. Thin niobium films can serve as model system for the upper critical field determination of high-κ superconducting samples, and can be used with high-temperature superconductors even at temperatures much below Tc. It is shown that for samples with high values of depinning frequency, one should measure both components of the complex frequency shift in order to determine the flow resistivity. The thick Nb film (160 nm) has low resistivity at 10 K, comparable to the best single crystals, and low κ value. In contrast, the thinnest (10 nm) film has κ ≈ 9.5 and exhibits a high depinning frequency (≈ 20 GHz) . The upper critical field determined from microwave measurements is related to the radius of nonoverlaping vortices, and appears to be larger than the one determined by the transition to the normal state.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical review B: Condensed matter and materials physics
Numberingvol. 74, no. 10, 104501
p-ISSN1098-0121
e-ISSN1550-235X
DOIhttps://doi.org/10.1103/PhysRevB.74.104501
URN:NBNurn:nbn:hr:217:920247
Publication2006
Document URLhttp://link.aps.org/doi/10.1103/PhysRevB.74.104501
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2006) by the American Physical Society.
Created on2019-10-15 19:04:52