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; R. K. Singh; R. Gandikota; J. Kim; B. Wilkens; N. Newman; J. Rowell; B. Moeckly; V. Ferrando; C. Tarantini; D. Marré; M. Putti; C. Ferdeghini; R. Vaglio; E. Haanappel

doi:10.1103/PhysRevB.71.012504

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
, R. K. Singh
, R. Gandikota
, J. Kim
, B. Wilkens
, N. Newman
, J. Rowell
, B. Moeckly

V. Ferrando, C. Tarantini, D. Marré, M. Putti, C. Ferdeghini, R. Vaglio, E. Haanappel

Research output: Contribution to journal › Article › peer-review

244 Scopus citations

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 language	English (US)
Article number	012504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	71
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.71.012504
State	Published - Jan 2005

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.71.012504

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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, Q., Xi, X. X., Singh, R. K., Gandikota, R., Kim, J., Wilkens, B., Newman, N., Rowell, J., ... Haanappel, E. (2005). High-field superconductivity in alloyed MgB ₂ thin films. Physical Review B - Condensed Matter and Materials Physics, 71(1), Article 012504. https://doi.org/10.1103/PhysRevB.71.012504

@article{7a4af1192d2849148feb6e89f6d7690b,

title = "High-field superconductivity in alloyed MgB 2 thin films",

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.",

author = "V. Braccini and A. Gurevich and Giencke, \{J. E.\} and Jewell, \{M. C.\} and Eom, \{C. B.\} and Larbalestier, \{D. C.\} and A. Pogrebnyakov and Y. Cui and Liu, \{B. T.\} and Hu, \{Y. F.\} and Redwing, \{J. M.\} and Qi Li and Xi, \{X. X.\} and Singh, \{R. K.\} and R. Gandikota and J. Kim and B. Wilkens and N. Newman and J. Rowell and B. Moeckly and V. Ferrando and C. Tarantini and D. Marr{\'e} and M. Putti and C. Ferdeghini and R. Vaglio and E. Haanappel",

year = "2005",

month = jan,

doi = "10.1103/PhysRevB.71.012504",

language = "English (US)",

volume = "71",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "1",

}

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, RK, 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

TY - JOUR

T1 - High-field superconductivity in alloyed MgB 2 thin films

AU - Braccini, V.

AU - Gurevich, A.

AU - Giencke, J. E.

AU - Jewell, M. C.

AU - Eom, C. B.

AU - Larbalestier, D. C.

AU - Pogrebnyakov, A.

AU - Cui, Y.

AU - Liu, B. T.

AU - Hu, Y. F.

AU - Redwing, J. M.

AU - Li, Qi

AU - Xi, X. X.

AU - Singh, R. K.

AU - Gandikota, R.

AU - Kim, J.

AU - Wilkens, B.

AU - Newman, N.

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.

PY - 2005/1

Y1 - 2005/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/20144388427

UR - https://www.scopus.com/pages/publications/20144388427#tab=citedBy

U2 - 10.1103/PhysRevB.71.012504

DO - 10.1103/PhysRevB.71.012504

M3 - Article

AN - SCOPUS:20144388427

SN - 1098-0121

VL - 71

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 1

M1 - 012504

ER -

High-field superconductivity in alloyed MgB ₂ thin films

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