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The Blackett Memorial Lecture, 1991 : Chemical Insights into High-Temperature Superconductors

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dc.contributor.author Rao, C N R
dc.date.accessioned 2012-11-29T11:05:30Z
dc.date.available 2012-11-29T11:05:30Z
dc.date.issued 1991-09-16
dc.identifier 1364-503X en_US
dc.identifier.citation Philosophical Transactions Of The Royal Society Of London Series A : Mathematical, Physical Sciences and Engineering 336(1644), 595-624 (1991) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1115
dc.description Review. Restricted Access. en_US
dc.description.abstract The high-temperature superconductors are complex oxides, generally containing two-dimensional CuO2 sheets. Various families of the cuprate superconductors are described, paying special attention to aspects related to oxygen stoichiometry, phase stability, synthesis and chemical manipulation of charge carriers. Other aspects discussed are chemical applications of cuprates, possibly as gas sensors and copper-free oxide superconductors. All but the substituted Nd and Pr cuprates are hole-superconductors. Several families of cuprates show a nearly constant n(h) at maximum T(c). Besides this universality, the cuprates exhibit a number of striking common features. Based on Cu(2p) photoemission studies, it is found that the Cu-O charge-transfer energy, DELTA, and the Cu(3d)-O(2p) hybridization strength, t(pd), are key factors in the superconductivity of cuprates. The relative intensity of the satellite in the Cu(2p) core-level spectra, the polarizability of the CuO2 sheets as well as the hole concentration are related to DELTA/t(pd). These chemical bonding factors have to be explicitly taken into account in any model for superconductivity of the cuprates. en_US
dc.description.uri http://dx.doi.org/10.1098/rsta.1991.0101 en_US
dc.publisher Royal Society London en_US
dc.rights © 1991 The Royal Society en_US
dc.subject Copper-Oxide Superconductors en_US
dc.subject High-Tc Superconductivity en_US
dc.subject Atmosphere Oxygen-Pressure en_US
dc.subject Neutron Powder Diffraction en_US
dc.subject X-Ray Absorption en_US
dc.subject Cu-O System en_US
dc.subject Cuprate Superconductors en_US
dc.subject Magnetic-Properties en_US
dc.subject Crystal-Chemistry en_US
dc.subject Thallium Cuprate en_US
dc.title The Blackett Memorial Lecture, 1991 : Chemical Insights into High-Temperature Superconductors en_US
dc.type Article en_US


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