Ramans study of Y1-xPrxBa2Cu3O7-δ and YB2Cu3-xZnxO7-δ single crystals

Hye Soo Shin; In Sang Yang; W. C. Lee

doi:10.1016/0921-4534(95)00309-6

Ramans study of Y_1-xPr_xBa₂Cu₃O_7-δ and YB₂Cu_3-xZn_xO_7-δ single crystals

Hye Soo Shin, In Sang Yang, W. C. Lee

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Single crystals with known T_c values of Y_1-xPr_xBa₂Cu₃O_7-δ (YPr1:2:3) and YBa₂Cu_3-xZn_3-xZn_xO_7-δ (YZn1:2:3) systems are studied by Raman measurements. The Raman spectra for (YPr1:2:3) single crystals show that the frequencies of Ba and O_z modes increase as the Pr content increases. The results are consistent with the hole-localization scheme proposed for the suppression of superconductivity in the polycrystalline YPr1:2:3 systems. On the other hand, in the YZn1:2:3 system, all the Raman modes do not change in frequencies. However, the FWHM of the Cu(2) mode increases with the decrease of T_c, indicating strong scattering of charge carriers by the substituted Zn ions in the CuO₂ planes. The induced disorder in the CuO₂ planes may be related with suppression of T_c in the YZn1:2:3 system. Thus, the suppression mechanism in the YZn1:2:3 systems seems to be different from that in the YPr1:2:3 systems.

Original language	English
Pages (from-to)	275-281
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	250
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(95)00309-6
State	Published - 15 Aug 1995

Bibliographical note

Funding Information:
The authors are grateful for support from the Korea Science & Engineering Foundation under contract Nos. 931-0200-032-2 (ISY) and 941-0200-005-2 (WCL).

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10.1016/0921-4534(95)00309-6

Cite this

@article{de9176c3d30d4261982788249ff015ab,

title = "Ramans study of Y1-xPrxBa2Cu3O7-δ and YB2Cu3-xZnxO7-δ single crystals",

abstract = "Single crystals with known Tc values of Y1-xPrxBa2Cu3O7-δ (YPr1:2:3) and YBa2Cu3-xZn3-xZnxO7-δ (YZn1:2:3) systems are studied by Raman measurements. The Raman spectra for (YPr1:2:3) single crystals show that the frequencies of Ba and Oz modes increase as the Pr content increases. The results are consistent with the hole-localization scheme proposed for the suppression of superconductivity in the polycrystalline YPr1:2:3 systems. On the other hand, in the YZn1:2:3 system, all the Raman modes do not change in frequencies. However, the FWHM of the Cu(2) mode increases with the decrease of Tc, indicating strong scattering of charge carriers by the substituted Zn ions in the CuO2 planes. The induced disorder in the CuO2 planes may be related with suppression of Tc in the YZn1:2:3 system. Thus, the suppression mechanism in the YZn1:2:3 systems seems to be different from that in the YPr1:2:3 systems.",

author = "Shin, {Hye Soo} and Yang, {In Sang} and Lee, {W. C.}",

note = "Funding Information: The authors are grateful for support from the Korea Science & Engineering Foundation under contract Nos. 931-0200-032-2 (ISY) and 941-0200-005-2 (WCL).",

year = "1995",

month = aug,

day = "15",

doi = "10.1016/0921-4534(95)00309-6",

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AU - Shin, Hye Soo

AU - Yang, In Sang

AU - Lee, W. C.

N1 - Funding Information: The authors are grateful for support from the Korea Science & Engineering Foundation under contract Nos. 931-0200-032-2 (ISY) and 941-0200-005-2 (WCL).

PY - 1995/8/15

Y1 - 1995/8/15

N2 - Single crystals with known Tc values of Y1-xPrxBa2Cu3O7-δ (YPr1:2:3) and YBa2Cu3-xZn3-xZnxO7-δ (YZn1:2:3) systems are studied by Raman measurements. The Raman spectra for (YPr1:2:3) single crystals show that the frequencies of Ba and Oz modes increase as the Pr content increases. The results are consistent with the hole-localization scheme proposed for the suppression of superconductivity in the polycrystalline YPr1:2:3 systems. On the other hand, in the YZn1:2:3 system, all the Raman modes do not change in frequencies. However, the FWHM of the Cu(2) mode increases with the decrease of Tc, indicating strong scattering of charge carriers by the substituted Zn ions in the CuO2 planes. The induced disorder in the CuO2 planes may be related with suppression of Tc in the YZn1:2:3 system. Thus, the suppression mechanism in the YZn1:2:3 systems seems to be different from that in the YPr1:2:3 systems.

AB - Single crystals with known Tc values of Y1-xPrxBa2Cu3O7-δ (YPr1:2:3) and YBa2Cu3-xZn3-xZnxO7-δ (YZn1:2:3) systems are studied by Raman measurements. The Raman spectra for (YPr1:2:3) single crystals show that the frequencies of Ba and Oz modes increase as the Pr content increases. The results are consistent with the hole-localization scheme proposed for the suppression of superconductivity in the polycrystalline YPr1:2:3 systems. On the other hand, in the YZn1:2:3 system, all the Raman modes do not change in frequencies. However, the FWHM of the Cu(2) mode increases with the decrease of Tc, indicating strong scattering of charge carriers by the substituted Zn ions in the CuO2 planes. The induced disorder in the CuO2 planes may be related with suppression of Tc in the YZn1:2:3 system. Thus, the suppression mechanism in the YZn1:2:3 systems seems to be different from that in the YPr1:2:3 systems.

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