@article{1ee965252b894cbb8716f6af77165f20,
title = "Multipole ordering and collective excitations in the excitonic phase of Pr0.5Ca0.5CoO3 ",
abstract = "As an extension of our previous paper (Yamaguchi et al., 2017) [24], we study the carrier doping dependence of the excitonic condensation in Pr0.5Ca0.5CoO3 using the random-phase and mean-field approximations for the realistic five-orbital Hubbard model. We show that the spin-triplet excitonic phase with a magnetic multipole ordering is stable against the doping of carriers in a considerable range around Co3+ (or 3d6). We discuss experimental relevance of our results.",
keywords = "Cobalt oxide, Collective mode, Excitonic phase, Magnetic multipole",
author = "Tomoki Yamaguchi and Koudai Sugimoto and Yukinori Ohta",
note = "Funding Information: We thank T. Kaneko and S. Miyakoshi for fruitful discussions. This work was supported in part by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (Nos. 26400349 , 15H06093 , and 17K05530 ). T. Y. acknowledges support from the Chiba University SEEDS Fund. The numerical calculations were carried out on computers in Yukawa Institute for Theoretical Physics, Kyoto University, Japan, and in Research Center for Computational Science, Okazaki, Japan. Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",
year = "2018",
month = may,
day = "1",
doi = "10.1016/j.physb.2017.08.020",
language = "English",
volume = "536",
pages = "37--39",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",
}