Structural, magnetic, and transport properties

J. L. Sarrao, D. P. Young, Z. Fisk, E. G. Moshopoulou, J. D. Thompson, B. C. Chakoumakos, S. E. Nagle

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Li substitutes for Cu in (Formula presented)(Formula presented) up to the limiting stoichiometry (Formula presented)(Formula presented)(Formula presented)(Formula presented), which has superstructure order. The effects of this in-plane hole doping on the structural and magnetic properties of (Formula presented)(Formula presented) are very similar to those due to Sr substitution. The tetragonal-orthorhombic structural phase transition occurs, for a given amount of Sr or Li, at nearly the same temperature, and the in-plane lattice constant of (Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented) at room temperature depends only on the combined hole count (x+y) and not on the individual Sr or Li concentration. Long-range magnetic order is destroyed upon substituting 3% Li for Cu, analogous to the effect of Sr substitution on (Formula presented). However, the holes introduced by Li substitution are bound. The resistivity as a function of temperature is nonmetallic for all Li concentrations.

Original languageEnglish
Pages (from-to)12014-12017
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume54
Issue number17
DOIs
StatePublished - Jan 1 1996

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