Evidence for two electronic components in high-temperature superconductivity from NMR

A new analysis of (63)Cu and (17)O NMR shift data on La(1.85)Sr(0.15)CuO(4) is reported that supports earlier work arguing for a two-component description of La(1.85)Sr(0.15)CuO(4), but conflicts with the widely held view that the cuprates are a one-component system. The data are analyzed in terms o...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2009-11, Vol.21 (45), p.455702-455702 (6)
Main Authors: Haase, J, Slichter, C P, Williams, G V M
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties
Physics
Properties of type I and type II superconductors
Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.)
Superconductivity
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Summary:A new analysis of (63)Cu and (17)O NMR shift data on La(1.85)Sr(0.15)CuO(4) is reported that supports earlier work arguing for a two-component description of La(1.85)Sr(0.15)CuO(4), but conflicts with the widely held view that the cuprates are a one-component system. The data are analyzed in terms of two components A and B with susceptibilities χ(AA), χ(AB)(= χ(BA)) and χ(BB). We find that above T(c), χ(AB) and χ(BB) are independent of temperature and obtain for the first time the temperature dependence of all three susceptibilities above T(c) as well as the complete temperature dependence of χ(AA)+χ(AB) and χ(AB)+χ(BB) below T(c). The form of the results agrees with that recently proposed by Barzykin and Pines.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/21/45/455702