55 citations
4 papers
Modification to the Fresnel formulas for amplified or attenuated internal reflection
Takeyuki Kobayashi
The present study addresses the question of total internal reflection of a plane wave from an amplifying or attenuating medium. Inspection on the expressions for the modal gain or…
Raman study of carrier-overdoping effects on the gap in high-Tc superconducting cuprates
T. Masui, M. Limonov, H. Uchiyama +3
Raman scattering in the heavily overdoped (Y,Ca)Ba_2Cu_3O_{7-d} (T_c = 65 K) and Bi_2Sr_2CaCu_2O_{8+d} (T_c = 55 K) crystals has been investigated. For the both crystals, the elect…
c-axis Raman Scattering in MgB2: Observation of a Dirty-Limit Gap in the pi-bands
J. W. Quilty, S. Lee, S. Tajima +1
Raman scattering spectra from the ac-face of thick MgB2 single crystals were measured in zz, xz and xx polarisations. In zz and xz polarisations a threshold at around 29 cm^{-1} fo…
Superconductivity-induced Resonance Raman Scattering in Multi-layer High-Tc Superconductors
Mikhail Limonov, Sergey Lee, Setsuko Tajima +1
Resonant Raman scattering below Tc has been discovered in several Bi-, Hg-, Tl-based high-Tc superconductors with three or four CuO2-layers. For Bi2Si2Ca2Cu3O10+d, we found an unex…