Charge-ordered state satisfying the Anderson condition in LiRh2 O4 arising from local dimer order

M. Shiomi, K. Kojima, N. Katayama, S. Maeda, J. A. Schneeloch, S. Yamamoto, K. Sugimoto, Y. Ohta, D. Louca, Y. Okamoto, H. Sawa

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the charge-ordered structure of LiRh2O4 arising below the metal-insulator transition at 170 K. Structural studies using synchrotron x rays have revealed that the charge-ordered states of Rh3+ and Rh4+ with dimerization are realized in the low-temperature phase below 170 K. Although the low-temperature ground state resembles that of CuIr2S4, a charge-ordering pattern satisfying the Anderson condition is realized in LiRh2O4. Based on structural information such as the short-range order of dimers appearing above the transition temperature and the weakening of the correlation between rhodium one-dimensional chains appearing in the crystal structure, we argue that the Coulomb interaction plays an important role in determining the charge-ordering patterns.

Original languageEnglish
Article numberA97
JournalPhysical Review B
Volume105
Issue number4
DOIs
Publication statusPublished - 2022 Jan 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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