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.
@article{arxiv.cond-mat/0009195,
title = {Phonons in intrinsic Josephson systems with parallel magnetic field},
author = {C. Preis and C. Helm and K. Schmalzl and J. Keller and R. Kleiner and P. Mueller},
journal= {arXiv preprint arXiv:cond-mat/0009195},
year = {2009}
}
Comments
Invited Paper to the "2nd International Symposium on Intrinsic Josephson Effects and Plasma Oscillations in High-Tc Superconductors", 22-24 August 2000, Sendai, Japan, to be published in Physica C