Commensurability effect on the charge ordering of La2-xSrxNiO4

T. Katsufuji, T. Tanabe, T. Ishikawa, S. Yamanouchi, Y. Tokura, T. Kakeshita, R. Kajimoto, H. Yoshizawa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Measurements of Hall coefficients, thermoelectric power, and optical conductivity spectra were done for single crystals of La2-xSrxNiO4 (x=0.27-0.50) showing prototypical charge ordering. We found that the character of the carriers in the charge-ordered state changes from electronlike to holelike when the hole concentration p crosses 1/3, and that the correlation gap in the optical spectrum for p=1/3 is collapsed when p is away from 1/3. These results indicate that the deviation of p from 1/3 can be regarded as electron or hole doping into the commensurate charge-ordered state at p=1/3.

Original languageEnglish
Pages (from-to)R5097-R5100
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number8
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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