Publication details

Origin of the magnetic field induced changes of the transverse plasma mode in the c-axis infrared response of underdoped YBa2Cu3O7-delta

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Year of publication 2011
Type Article in Periodical
Magazine / Source Journal of Physics: Condensed Matter
MU Faculty or unit

Central European Institute of Technology

Field Solid matter physics and magnetism
Keywords Infrared response; cuprate superconductors; interlayer electrodynamics; magnetic field dependence
Description We report on results of our theoretical study of magnetic field induced changes of the c axis infrared response of bilayer cuprate superconductors using the phenomenological multilayer model involving the conductivity of the spacing layers and that of the bilayer units. For H perpendicular to the planes, the local conductivities have been expressed in terms of a two fluid approximation as weighted averages of the superconducting state ones and the normal state ones representing contributions of the vortex cores, the weight of the latter increasing linearly with the field. This allows us to reproduce and interpret the reported changes of the well known 400 cm-1 peak (transverse plasma mode) in the c axis conductivity.
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