PMID: 11328109May 1, 2001Paper

Persistence of Li induced Kondo moments in the superconducting state of cuprates

Physical Review Letters
J BobroffJ F Marucco

Abstract

Using 7Li NMR shift data, the anomalous local moment induced by spinless Li impurities persists below T(c) in YBa 2Cu 3O6+y. In the underdoped regime, the moments retain their Curie law below Tc. In contrast, near optimal doping, the large Kondo screening observed above Tc (TK = 135 K) is strongly reduced below Tc as expected theoretically when the superconducting gap develops. The limited spatial extent of the induced moment (on first near neighbor Cu) is not drastically modified below Tc, which allows a comparison with STM determination of the local density of states. Our results constrain theoretical models of the impurity electronic properties.

References

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Citations

Jul 5, 2002·Physical Review Letters·Andreas LäuchliSteven R White
Jun 19, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Liang ChenRong-Sheng Han
Dec 14, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Liang ChenRong-Sheng Han
Sep 6, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Liang ChenRong-Sheng Han
Feb 16, 2013·Reports on Progress in Physics·Lars Fritz, Matthias Vojta
Dec 17, 2004·Physical Review Letters·P Prelovsek, I Sega
May 7, 2003·Physical Review Letters·Matthias Vojta, Marijana Kirćan
Mar 5, 2004·Physical Review Letters·Yan Chen, C S Ting
Feb 9, 2005·Physical Review Letters·Lijun ZhuAntoine Georges
Aug 23, 2002·Physical Review Letters·Jian-Xin ZhuA R Bishop
Nov 22, 2002·Physical Review Letters·Ziqiang Wang, Patrick A Lee
Mar 16, 2007·Physical Review Letters·Kaj H HöglundSubir Sachdev
Sep 28, 2004·Physical Review Letters·Bruce A DavidsonJames N Eckstein

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