Nonlinear microwave response of MgB2

Dahm T, Scalapino DJ (2004)
Applied Physics Letters 85(19): 4436-4438.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We calculate the intrinsic nonlinear microwave response of the two gap superconductor MgB2 in the clean and dirty limits. Due to the small value of the pi-band gap, the nonlinear response at low temperatures is larger than for a single gap Bardeen-Cooper-Schrieffer s-wave superconductor with a transition temperature of 40 K. Comparing this result with the intrinsic nonlinear d-wave response of YBa2Cu3O7, we find a comparable response at temperatures around 20 K. Due to its two gap nature, impurity scattering in MgB2 can be used to reduce the nonlinear response if the scattering rate in the pi-band is made larger than the one in the sigma-band. (C) 2004 American Institute of Physics.
Erscheinungsjahr
Zeitschriftentitel
Applied Physics Letters
Band
85
Zeitschriftennummer
19
Seite
4436-4438
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Dahm T, Scalapino DJ. Nonlinear microwave response of MgB2. Applied Physics Letters. 2004;85(19):4436-4438.
Dahm, T., & Scalapino, D. J. (2004). Nonlinear microwave response of MgB2. Applied Physics Letters, 85(19), 4436-4438. doi:10.1063/1.1815067
Dahm, T., and Scalapino, D. J. (2004). Nonlinear microwave response of MgB2. Applied Physics Letters 85, 4436-4438.
Dahm, T., & Scalapino, D.J., 2004. Nonlinear microwave response of MgB2. Applied Physics Letters, 85(19), p 4436-4438.
T. Dahm and D.J. Scalapino, “Nonlinear microwave response of MgB2”, Applied Physics Letters, vol. 85, 2004, pp. 4436-4438.
Dahm, T., Scalapino, D.J.: Nonlinear microwave response of MgB2. Applied Physics Letters. 85, 4436-4438 (2004).
Dahm, Thomas, and Scalapino, DJ. “Nonlinear microwave response of MgB2”. Applied Physics Letters 85.19 (2004): 4436-4438.