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Proceedings Paper

Collective excitations below Tc in cuprate superconductors
Author(s): A. C. Sharma; Ina Kulshrestha
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Paper Abstract

We present a theoretical study of frequency and line shape for collective excitation of charge carriers below T for cuprate superconductors ..IP La SrCuC and like YBa2Cu3()7. using layered electron ga tide1. The collective excitations are studied in the frequency range h 2t QVF< T < T, where A, q. v. and T are respectively the component of wave vector in a—b plane, binding energy of Cooper pair, Fermi velocity and the temperature. The polarizability for a two dimensional fluid comprising of paired as well as unpaired electrons is calculated and used to calculate the imaginary part of inverse dielectric response function, which gives rise to the frequency and line shapes of collective excitations.The plasrnon line shapes of a layered electron gas are found very similar in nature to that of three dimensional electron gas below T.

Paper Details

Date Published: 29 June 1994
PDF: 8 pages
Proc. SPIE 2157, Superconducting Superlattices and Multilayers, (29 June 1994); doi: 10.1117/12.179178
Show Author Affiliations
A. C. Sharma, Jiwaji Univ. Gwalior (India)
Ina Kulshrestha, Jiwaji Univ. Gwalior (India)

Published in SPIE Proceedings Vol. 2157:
Superconducting Superlattices and Multilayers
Ivan Bozovic, Editor(s)

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