Optical probe of charge-spin-lattice dynamics in half-doped (formula presented)

K. Yamamoto; K. Ishizaka; E. Saitoh; S. Shinomori; T. Tanabe; Takuro Katsufuji; Y. Tokura

doi:10.1103/PhysRevB.67.014414

Optical probe of charge-spin-lattice dynamics in half-doped (formula presented)

K. Yamamoto, K. Ishizaka, E. Saitoh, S. Shinomori, T. Tanabe, Takuro Katsufuji, Y. Tokura

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1 Citation (Scopus)

Abstract

We have investigated the charge-spin-ordering transition in (formula presented) by measurements of Raman and optical conductivity spectra. The checkerboard-type charge ordering below (formula presented) can be probed by activated phonon (formula presented) and (formula presented) and two-magnon (formula presented) modes in the infrared and Raman spectra as well as by formation of pseudogaps in the optical conductivity spectra. Besides, another (formula presented) Raman mode emerges below 150 K together with reduction of the optical gap, which can be attributed to another ordering process, i.e., the stripe formation.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.67.014414
Publication status	Published - 2003 Jan 1
Externally published	Yes

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Yamamoto, K., Ishizaka, K., Saitoh, E., Shinomori, S., Tanabe, T., Katsufuji, T., & Tokura, Y. (2003). Optical probe of charge-spin-lattice dynamics in half-doped (formula presented). Physical Review B - Condensed Matter and Materials Physics, 67(1). https://doi.org/10.1103/PhysRevB.67.014414

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AU - Tanabe, T.

AU - Katsufuji, Takuro

AU - Tokura, Y.

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N2 - We have investigated the charge-spin-ordering transition in (formula presented) by measurements of Raman and optical conductivity spectra. The checkerboard-type charge ordering below (formula presented) can be probed by activated phonon (formula presented) and (formula presented) and two-magnon (formula presented) modes in the infrared and Raman spectra as well as by formation of pseudogaps in the optical conductivity spectra. Besides, another (formula presented) Raman mode emerges below 150 K together with reduction of the optical gap, which can be attributed to another ordering process, i.e., the stripe formation.

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10.1103/PhysRevB.67.014414