Raman study on quenched YBa2Cu3O7-σ single crystals: Evidence of charge transfer during oxygen ordering on room temperature annealing

Kiyoto Matsuishi; Yuan Kai Tao; Hung Su Feng; Pei Herng Hor; Ching Wu Chu

doi:10.1016/0921-4534(91)91637-J

Raman study on quenched YBa₂Cu₃O_7-σ single crystals: Evidence of charge transfer during oxygen ordering on room temperature annealing

Kiyoto Matsuishi, Yuan Kai Tao, Hung Su Feng, Pei Herng Hor, Ching Wu Chu

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Abstract

The Raman spectra of quenched YBa₂Cu₃O_7-σ single crystals have been measured as a function of time in order to obtain information about oxygen ordering on room temperature annealing. It is found that the Raman frequency of the bridging oxygen (04) vibration mode increases with time on room temperature annealing, in coincidence with an increase in T_c. The observation is attributed to a change in the charge distribution in Cu2-O4-Cul complexes, resulting from a charge transfer caused by oxygen vacancy ordering.

Original language	English
Pages (from-to)	827-828
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	185-189
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(91)91637-J
Publication status	Published - 1991 Dec 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(91)91637-J

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title = "Raman study on quenched YBa2Cu3O7-σ single crystals: Evidence of charge transfer during oxygen ordering on room temperature annealing",

abstract = "The Raman spectra of quenched YBa2Cu3O7-σ single crystals have been measured as a function of time in order to obtain information about oxygen ordering on room temperature annealing. It is found that the Raman frequency of the bridging oxygen (04) vibration mode increases with time on room temperature annealing, in coincidence with an increase in Tc. The observation is attributed to a change in the charge distribution in Cu2-O4-Cul complexes, resulting from a charge transfer caused by oxygen vacancy ordering.",

author = "Kiyoto Matsuishi and Tao, {Yuan Kai} and Feng, {Hung Su} and Hor, {Pei Herng} and Chu, {Ching Wu}",

note = "Funding Information: quench, Raman scattering spectra (zz) were ~neasured at room temperature. We assume that the oxygen contents did not change on room temperature annealing. 2 This work is supported in part by the NSF Low Temperature Physics Program Grant No. DMR 86-126539, DARPA Grant No. MDA 972-88-G-002, NASA Grant No. NAGW-977, Texas Center for Superconductivitya t the University of Houston, and the T. L. L. Temple Foundation.",

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doi = "10.1016/0921-4534(91)91637-J",

language = "English",

volume = "185-189",

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T2 - Evidence of charge transfer during oxygen ordering on room temperature annealing

AU - Matsuishi, Kiyoto

AU - Tao, Yuan Kai

AU - Feng, Hung Su

AU - Hor, Pei Herng

AU - Chu, Ching Wu

N1 - Funding Information: quench, Raman scattering spectra (zz) were ~neasured at room temperature. We assume that the oxygen contents did not change on room temperature annealing. 2 This work is supported in part by the NSF Low Temperature Physics Program Grant No. DMR 86-126539, DARPA Grant No. MDA 972-88-G-002, NASA Grant No. NAGW-977, Texas Center for Superconductivitya t the University of Houston, and the T. L. L. Temple Foundation.

PY - 1991/12/1

Y1 - 1991/12/1

N2 - The Raman spectra of quenched YBa2Cu3O7-σ single crystals have been measured as a function of time in order to obtain information about oxygen ordering on room temperature annealing. It is found that the Raman frequency of the bridging oxygen (04) vibration mode increases with time on room temperature annealing, in coincidence with an increase in Tc. The observation is attributed to a change in the charge distribution in Cu2-O4-Cul complexes, resulting from a charge transfer caused by oxygen vacancy ordering.

AB - The Raman spectra of quenched YBa2Cu3O7-σ single crystals have been measured as a function of time in order to obtain information about oxygen ordering on room temperature annealing. It is found that the Raman frequency of the bridging oxygen (04) vibration mode increases with time on room temperature annealing, in coincidence with an increase in Tc. The observation is attributed to a change in the charge distribution in Cu2-O4-Cul complexes, resulting from a charge transfer caused by oxygen vacancy ordering.

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JO - Physica C: Superconductivity and its applications

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IS - PART 2

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Raman study on quenched YBa₂Cu₃O_7-σ single crystals: Evidence of charge transfer during oxygen ordering on room temperature annealing

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