Time dependent electric field and E-I curves in Bi-2223 tapes carrying DC currents and exposed to perpendicular AC magnetic fields

Friedman, A.; Lukovsky, G.; Roitberg, V.; Wolfus, Y.; Kopansky, F; Kalisky, Beena; Yeshurun, Y.

doi:10.1088/1742-6596/43/1/141

Cited by 3 publications

(1 citation statement)

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Attention has been mainly focused on a particular phenomenon, namely, the generation of a steady electric field by the alternating magnetic field. This phenomenon has been observed experimentally [1][2][3][5][6][7][8][9][10][11][12] and analyzed theoretically in several previous studies. 1,2,4,9,13 According to these studies, the applied alternating magnetic field modulates the vortex spatial distribution inside the superconducting sample, giving rise to a net flow of vortices from one side of the sample to the other.…”

Section: Introductionmentioning

confidence: 99%

Voltage response of current carrying Y–Ba–Cu–O tapes to alternating magnetic fields

Uksusman

Wolfus

Friedman

et al. 2009

Journal of Applied Physics

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We present a study of the alternating voltage generated in YBa 2 Cu 3 O 7−␦ ͑YBCO͒ tapes in response to sinusoidal magnetic fields applied perpendicular to the tapes. The alternating field induces a strongly nonlinear voltage response with various waveforms that drastically change upon changing the bias current, the bias magnetic field, and the amplitude and frequency of the alternating field. In particular, one observes transitions from waveforms including double peaks to waveforms including a single peak in one cycle of the alternating field. We attribute these effects to modulation of the vortex pinning energy by both the alternating magnetic field and the alternating current induced by it. Our model allows separation of these two contributions to the total response, thus revealing the dominating source of the nonlinear response and its accompanied steady component at different experimental conditions.

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