Phys. Rev. Lett. 94, 237002 (2005) [4 pages]Isotope Effect in the Superfluid Density of High-Temperature Superconducting Cuprates: Stripes, Pseudogap, and ImpuritiesReceived 29 July 2004; published 16 June 2005 Underdoped cuprates exhibit a normal-state pseudogap, and their spins and doped carriers tend to spatially separate into 1D or 2D stripes. Some view these as central to superconductivity and others as peripheral and merely competing. Using La2-xSrxCu1-yZnyO4 we show that an oxygen isotope effect in Tc and in the superfluid density can be used to distinguish between the roles of stripes and pseudogap and also to detect the presence of impurity scattering. We conclude that stripes and pseudogap are distinct, and both compete and coexist with superconductivity. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.237002
DOI:
10.1103/PhysRevLett.94.237002
PACS:
74.72.Dn, 71.10.Hf, 74.25.Dw, 74.62.Dh
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