High-field superconductivity in alloyed MgB 2 thin films

V. Braccini, A. Gurevich, J. E. Giencke, M. C. Jewell, C. B. Eom, D. C. Larbalestier, A. Pogrebnyakov, Y. Cui, B. T. Liu, Y. F. Hu, J. M. Redwing, Qi Li, X. X. Xi, Rakesh Singh, R. Gandikota, J. Kim, B. Wilkens, Nathan Newman, J. Rowell, B. Moeckly & 7 others V. Ferrando, C. Tarantini, D. Marré, M. Putti, C. Ferdeghini, R. Vaglio, E. Haanappel

Research output: Contribution to journalArticle

216 Citations (Scopus)

Abstract

We investigated the effect of alloying on the upper critical field H c2 for 12 MgB 2 films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, finding a significant H c2 enhancement in C-alloyed films, and an anomalous upward curvature of H c2(T). Record high values of H c2 (4.2) ≈ 35 T and H c2 (4.2) ≈ 51 T were observed perpendicular and parallel to the ab plane, respectively. The temperature dependence of H c2(T) is described well by a theory of dirty two-gap superconductivity. Extrapolation of the experimental data to T=0 suggests that H c2 (O) may approach the paramagnetic limit of ∼70 T.

Original languageEnglish (US)
Article number012504
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number1
DOIs
StatePublished - Jan 2005

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Superconductivity
superconductivity
Thin films
thin films
Ion bombardment
ion irradiation
Alloying
Extrapolation
alloying
extrapolation
Carbon
curvature
Doping (additives)
disorders
temperature dependence
augmentation
carbon
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Braccini, V., Gurevich, A., Giencke, J. E., Jewell, M. C., Eom, C. B., Larbalestier, D. C., ... Haanappel, E. (2005). High-field superconductivity in alloyed MgB 2 thin films. Physical Review B - Condensed Matter and Materials Physics, 71(1), [012504]. https://doi.org/10.1103/PhysRevB.71.012504

High-field superconductivity in alloyed MgB 2 thin films. / Braccini, V.; Gurevich, A.; Giencke, J. E.; Jewell, M. C.; Eom, C. B.; Larbalestier, D. C.; Pogrebnyakov, A.; Cui, Y.; Liu, B. T.; Hu, Y. F.; Redwing, J. M.; Li, Qi; Xi, X. X.; Singh, Rakesh; Gandikota, R.; Kim, J.; Wilkens, B.; Newman, Nathan; Rowell, J.; Moeckly, B.; Ferrando, V.; Tarantini, C.; Marré, D.; Putti, M.; Ferdeghini, C.; Vaglio, R.; Haanappel, E.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 71, No. 1, 012504, 01.2005.

Research output: Contribution to journalArticle

Braccini, V, Gurevich, A, Giencke, JE, Jewell, MC, Eom, CB, Larbalestier, DC, Pogrebnyakov, A, Cui, Y, Liu, BT, Hu, YF, Redwing, JM, Li, Q, Xi, XX, Singh, R, Gandikota, R, Kim, J, Wilkens, B, Newman, N, Rowell, J, Moeckly, B, Ferrando, V, Tarantini, C, Marré, D, Putti, M, Ferdeghini, C, Vaglio, R & Haanappel, E 2005, 'High-field superconductivity in alloyed MgB 2 thin films', Physical Review B - Condensed Matter and Materials Physics, vol. 71, no. 1, 012504. https://doi.org/10.1103/PhysRevB.71.012504
Braccini V, Gurevich A, Giencke JE, Jewell MC, Eom CB, Larbalestier DC et al. High-field superconductivity in alloyed MgB 2 thin films. Physical Review B - Condensed Matter and Materials Physics. 2005 Jan;71(1). 012504. https://doi.org/10.1103/PhysRevB.71.012504
Braccini, V. ; Gurevich, A. ; Giencke, J. E. ; Jewell, M. C. ; Eom, C. B. ; Larbalestier, D. C. ; Pogrebnyakov, A. ; Cui, Y. ; Liu, B. T. ; Hu, Y. F. ; Redwing, J. M. ; Li, Qi ; Xi, X. X. ; Singh, Rakesh ; Gandikota, R. ; Kim, J. ; Wilkens, B. ; Newman, Nathan ; Rowell, J. ; Moeckly, B. ; Ferrando, V. ; Tarantini, C. ; Marré, D. ; Putti, M. ; Ferdeghini, C. ; Vaglio, R. ; Haanappel, E. / High-field superconductivity in alloyed MgB 2 thin films. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 71, No. 1.
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AU - Kim, J.

AU - Wilkens, B.

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AU - Rowell, J.

AU - Moeckly, B.

AU - Ferrando, V.

AU - Tarantini, C.

AU - Marré, D.

AU - Putti, M.

AU - Ferdeghini, C.

AU - Vaglio, R.

AU - Haanappel, E.

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