Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates

Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates

Since conventional superconductivity is mediated by phonons, their role in the mechanism of high temperature superconductivity has been considered very early after the discovery of the cuprates. The initial consensus was that phonons could not produce transition temperatures near 100 K, and the main...

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Main Author: D. Reznik
Format: Article
Language:English
Published: Hindawi Limited 2010-01-01
Series:Advances in Condensed Matter Physics
Online Access:http://dx.doi.org/10.1155/2010/523549
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spelling doaj-ec518461910a455d8ddd867b31c3eb9a2020-11-24T22:44:10ZengHindawi LimitedAdvances in Condensed Matter Physics1687-81081687-81242010-01-01201010.1155/2010/523549523549Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other CupratesD. Reznik0Karlsruher Institut für Technologie (KIT), Institut für Festkörperphysik, Postfach 3640, D-76121 Karlsruhe, GermanySince conventional superconductivity is mediated by phonons, their role in the mechanism of high temperature superconductivity has been considered very early after the discovery of the cuprates. The initial consensus was that phonons could not produce transition temperatures near 100 K, and the main direction of research focused on nonphononic mechanisms. Subsequent work last reviewed by L. Pintschovius in 2005 showed that electron-phonon coupling in the cuprates is surprisingly strong for some phonons and its role is controversial. Experiments performed since then identified anomalous behavior of certain Cu–O bond-stretching phonons in cuprates as an important phenomenon that is somehow related to the mechanism of superconductivity. A particularly big advance was made in the study of doped La2CuO4. This work is reviewed here.http://dx.doi.org/10.1155/2010/523549
collection DOAJ
language English
format Article
sources DOAJ
author D. Reznik
spellingShingle D. Reznik
Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates
Advances in Condensed Matter Physics
author_facet D. Reznik
author_sort D. Reznik
title Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates
title_short Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates
title_full Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates
title_fullStr Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates
title_full_unstemmed Giant Electron-Phonon Anomaly in Doped La2CuO4 and Other Cuprates
title_sort giant electron-phonon anomaly in doped la2cuo4 and other cuprates
publisher Hindawi Limited
series Advances in Condensed Matter Physics
issn 1687-8108
1687-8124
publishDate 2010-01-01
description Since conventional superconductivity is mediated by phonons, their role in the mechanism of high temperature superconductivity has been considered very early after the discovery of the cuprates. The initial consensus was that phonons could not produce transition temperatures near 100 K, and the main direction of research focused on nonphononic mechanisms. Subsequent work last reviewed by L. Pintschovius in 2005 showed that electron-phonon coupling in the cuprates is surprisingly strong for some phonons and its role is controversial. Experiments performed since then identified anomalous behavior of certain Cu–O bond-stretching phonons in cuprates as an important phenomenon that is somehow related to the mechanism of superconductivity. A particularly big advance was made in the study of doped La2CuO4. This work is reviewed here.
url http://dx.doi.org/10.1155/2010/523549
work_keys_str_mv AT dreznik giantelectronphononanomalyindopedla2cuo4andothercuprates
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