Phonons in intrinsic Josephson systems with parallel magnetic field
C. Preis, C. Helm, K. Schmalzl, J. Keller, R. Kleiner, P. Mueller
Abstract
Subgap resonances in the I-V curves of layered superconductors are explained by the coupling between Josephson oscillations and phonons with dispersion in c-direction. In the presence of a magnetic field applied parallel to the layers additional structures due to fluxon motion appear. Their coupling with phonons is investigated theoretically and a shift of the phonon resonances in strong magnetic fields is predicted.
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