Magnetoplasma-reflection of thin films of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>

Author(s)
W. Markowitsch, Wolfgang Lang, H. Jodlbauer, P. Schwab, X.Z. Wang, D. Bäuerle
Abstract

Reflection and magnetoreflection measurements on thin films of Y-Ba-Cu-O are reported. The reflection spectra show an edge in the near infrared. This feature is interpreted as a plasma edge. Magnetoreflection measurements were carried out in Faraday-configuration using a He-Ne-laser with a wavelength of 1.15 μm (1.07 eV), i.e. in the region of the plasma edge. A change of the reflectance of circular polarized light was observed as a function of the external magnetic field. We interprete this effect as a shift of the plasma edge induced by the magnetic field (magnetoplasma effect). From this shift we determine the value of the effective carrier mass meff = 4mo. This result indicates a strong coupling of the carriers to other excitations.

Organisation(s)
Electronic Properties of Materials
Pages
189-194
No. of pages
6
DOI
https://doi.org/10.1016/B978-0-444-89353-6.50035-X
Publication date
1992
Austrian Fields of Science 2012
Materials physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/magnetoplasmareflection-of-thin-films-of-yba2cu3o7(5c439053-ab35-47cb-acb7-17370db2f6a4).html