Charge redistribution in YBa2Cu3O7-d probed by Raman spectroscopy: CuO2-plane phonon as a probe of carrier dynamics in the CuO2 plane

Minoru Osada; Masato Kakihana; Mikael Käll; Lars Börjesson

doi:10.1063/1.1529082

Charge redistribution in YBa₂Cu₃O_7-d probed by Raman spectroscopy: CuO₂-plane phonon as a probe of carrier dynamics in the CuO₂ plane

Minoru Osada, Masato Kakihana, Mikael Käll, Lars Börjesson

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

Yttrium barium copper oxide system, which undergoes a metal-to-insulator transition under variation of carrier concentration, was investigated using Raman spectroscopy. The intensity of CuO₂-plane phonon modes decreased as the system approached the metal-to-insulator phase boundary and it scaled with the inverse of the hole concentration within the CuO₂ conducting planes. The CuO₂-plane mode intensity and transition temperature for the oxides was found to be correlated. It was found that a simple and useful probe for metal-to-insulator transition and carrier dynamics in the CuO₂ plane for substituted materials was provided by this correlation and the CuO₂-plane mode intensity.

Original language	English
Pages (from-to)	4988-4990
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	26
DOIs	https://doi.org/10.1063/1.1529082
Publication status	Published - 2002 Dec 23
Externally published	Yes

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ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Cite this

Osada, M., Kakihana, M., Käll, M., & Börjesson, L. (2002). Charge redistribution in YBa₂Cu₃O_7-d probed by Raman spectroscopy: CuO₂-plane phonon as a probe of carrier dynamics in the CuO₂ plane. Applied Physics Letters, 81(26), 4988-4990. https://doi.org/10.1063/1.1529082

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abstract = "Yttrium barium copper oxide system, which undergoes a metal-to-insulator transition under variation of carrier concentration, was investigated using Raman spectroscopy. The intensity of CuO2-plane phonon modes decreased as the system approached the metal-to-insulator phase boundary and it scaled with the inverse of the hole concentration within the CuO2 conducting planes. The CuO2-plane mode intensity and transition temperature for the oxides was found to be correlated. It was found that a simple and useful probe for metal-to-insulator transition and carrier dynamics in the CuO2 plane for substituted materials was provided by this correlation and the CuO2-plane mode intensity.",

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AB - Yttrium barium copper oxide system, which undergoes a metal-to-insulator transition under variation of carrier concentration, was investigated using Raman spectroscopy. The intensity of CuO2-plane phonon modes decreased as the system approached the metal-to-insulator phase boundary and it scaled with the inverse of the hole concentration within the CuO2 conducting planes. The CuO2-plane mode intensity and transition temperature for the oxides was found to be correlated. It was found that a simple and useful probe for metal-to-insulator transition and carrier dynamics in the CuO2 plane for substituted materials was provided by this correlation and the CuO2-plane mode intensity.

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10.1063/1.1529082