Microscopic gauge-invariant theory of the c-axis infrared response of bilayer cuprate superconductors and the origin of the superconductivity-induced absorption bands

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00035682" target="_blank" >RIV/00216224:14310/09:00035682 - 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

Microscopic gauge-invariant theory of the c-axis infrared response of bilayer cuprate superconductors and the origin of the superconductivity-induced absorption bands

Original language description

We report on results of our study of the c-axis infrared conductivity of bilayer high-Tc cuprate superconductors using a model involving the bilayer-split bands. An emphasis is on the gauge invariance of the theory, which turns out to be essential for the understanding of the electrodynamics of these compounds. The description of the optical response involves local intra- bilayer and interbilayer current densities and local conductivities. The local conductivities are obtained using a microscopic theory, where the quasiparticles of the two bands are coupled to spin fluctuations. The resulting response of the model is studied in detail and an interpretation of two superconductivity-induced peaks in the experimental data of the real part of the c-axis conductivity is proposed. The peak around 400 cm-1 is attributed to a collective mode of the intrabilayer regions, which is an analog of the Bogolyubov-Anderson mode. The peak around 1000 cm-1 is interpreted as a pair-breaking feature.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review B

ISSN

1098-0121

e-ISSN

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Volume of the periodical

79

Issue of the periodical within the volume

18

Country of publishing house

US - UNITED STATES

Number of pages

17

Pages from-to

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UT code for WoS article

000266501200098

EID of the result in the Scopus database

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