Nature of the pseudogap in high-T cuprates: Analysis of the bulk magnetic susceptibility of La Sr Cu Zn O
Journal of Superconductivity and Novel Magnetism, ISSN: 1557-1939, Vol: 23, Issue: 8, Page: 1569-1574
2010
- 6Citations
- 4Captures
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Article Description
The nature of the pseudogap in the quasiparticle spectral density in high-T cuprates is a matter of intense debate. In this study we have investigated the effects of Zn substitution on the uniform ( q= 0, where q} is the wave vector) magnetic susceptibility, χ(T), of La Sr Cu Zn O sintered samples with different hole concentrations, p(ξx), over a wide range of Zn contents (y). Non-magnetic Zn suppressed T most effectively and enhanced χ(T) systematically at low temperatures. We have extracted the characteristic pseudogap energy scale, ε , from the analysis of χ(T) data. Unlike T ,ε was found to be fairly insensitive to the level of Zn substitution, even when T was completely suppressed by Zn. The Zn-induced Curie-like enhancement of the χ(T) was also found to be closely related to the PG energy scale. We discuss the possible implications of these findings in this paper. © 2010 Springer Science+Business Media, LLC.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=78649708662&origin=inward; http://dx.doi.org/10.1007/s10948-010-0814-9; http://link.springer.com/10.1007/s10948-010-0814-9; https://dx.doi.org/10.1007/s10948-010-0814-9; https://link.springer.com/article/10.1007/s10948-010-0814-9; http://www.springerlink.com/index/10.1007/s10948-010-0814-9; http://www.springerlink.com/index/pdf/10.1007/s10948-010-0814-9
Springer Science and Business Media LLC
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