Electrodynamics of (Nd,Eu,Gd)Ba2Cu3Oy single crystals

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F11%3A00185626" target="_blank" >RIV/68407700:21340/11:00185626 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Electrodynamics of (Nd,Eu,Gd)Ba2Cu3Oy single crystals
Original language description
We studied infrared reflectivity of two single-crystalline (Nd,Eu,Gd)Ba2Cu3Oy superconductors at temperatures from 300 to 10 K and at frequencies from 35 to 8000 cm-1. The crystals had the same nominal Nd content and differed in the Eu and Gd content. The crystal with excess of Gd exhibited much more pronounced middle-infrared band and phonon lines than the second crystal. This was consistent with significantly lower charge-carrier concentration in the crystal which led to weaker screening of the phonons and the middle-infrared band. The concentration was determined from the simple Drude model. We also performed the one-component analysis of the reflectivity. The analysis revealed that the Gd-rich crystal optical response comes from bound and free charge carriers whereas the Eu-rich crystal response originates from interacting carriers which are neither free nor bound.
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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