Charge-ordered states in (La,Sr)2NiO4 for hole concentrations nh=1/3 and 1/2

S. W. Cheong, H. Y. Hwang, C. H. Chen, B. Batlogg, L. W. Rupp, S. A. Carter

Research output: Contribution to journalArticlepeer-review

216 Scopus citations

Abstract

Real-space ordering of doped holes in La2-xSrxNiO4 is revealed in magnetic and electronic-transport anomalies at low temperatures. The ordering is most pronounced for a hole concentration nh of 1/3 below 235 K where a superlattice with a modulation wave vector δ of 1/3 has been found. For nh=1/2, another charge-ordered state with δ=0 is also indicated below ∼340 K. Our results are, furthermore, suggestive of mesoscopic hole segregation for 0.2≤x≤0.4 forming the nh=1/3 and δ=1/3 state below 235 K.

Original languageEnglish (US)
Pages (from-to)7088-7091
Number of pages4
JournalPhysical Review B
Volume49
Issue number10
DOIs
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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