Inelastic light scattering studies of overdoped y1-xCa xBa2Cu3O7-δ thin film

J. H. Lin; S. M. Weng; H. L. Liu; P. C. Chung; J. Y. Lin

doi:10.1002/pssb.200777110

Inelastic light scattering studies of overdoped y_1-xCa _xBa₂Cu₃O_7-δ thin film

J. H. Lin
, S. M. Weng
, H. L. Liu^*
, P. C. Chung
, J. Y. Lin

^*此作品的通信作者

物理學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

摘要

The vibrational and magnetic Raman excitation spectra were examined in overdoped Y_1-xCa_xBa₂Cu₃O _7-δ thin films. Below T_c, certain phonons in undoped YBa₂Cu₃O_7-δ (YBCO) show strong self-energy effects, which gradually vanish with increasing Ca concentration into the overdoped regime. The observed B_1g symmetry two-magnon excitation peak near 2900 cm^-1 in YBCO is significantly broadened, weakened, and shifts to the lower frequency with increasing Ca content, indicating the effective value of magnetic superexchange energy decreases and that the life time of the magnons becomes shorter with increasing hole concentrations.

原文	英語
頁（從 - 到）	4598-4601
頁數	4
期刊	Physica Status Solidi (B) Basic Research
卷	244
發行號	12
DOIs	https://doi.org/10.1002/pssb.200777110
出版狀態	已發佈 - 2007 12月

ASJC Scopus subject areas

電子、光磁材料
凝聚態物理學

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10.1002/pssb.200777110

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title = "Inelastic light scattering studies of overdoped y1-xCa xBa2Cu3O7-δ thin film",

abstract = "The vibrational and magnetic Raman excitation spectra were examined in overdoped Y1-xCaxBa2Cu3O 7-δ thin films. Below Tc, certain phonons in undoped YBa2Cu3O7-δ (YBCO) show strong self-energy effects, which gradually vanish with increasing Ca concentration into the overdoped regime. The observed B1g symmetry two-magnon excitation peak near 2900 cm-1 in YBCO is significantly broadened, weakened, and shifts to the lower frequency with increasing Ca content, indicating the effective value of magnetic superexchange energy decreases and that the life time of the magnons becomes shorter with increasing hole concentrations.",

author = "Lin, \{J. H.\} and Weng, \{S. M.\} and Liu, \{H. L.\} and Chung, \{P. C.\} and Lin, \{J. Y.\}",

year = "2007",

month = dec,

doi = "10.1002/pssb.200777110",

language = "English",

volume = "244",

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T1 - Inelastic light scattering studies of overdoped y1-xCa xBa2Cu3O7-δ thin film

AU - Lin, J. H.

AU - Weng, S. M.

AU - Liu, H. L.

AU - Chung, P. C.

AU - Lin, J. Y.

PY - 2007/12

Y1 - 2007/12

N2 - The vibrational and magnetic Raman excitation spectra were examined in overdoped Y1-xCaxBa2Cu3O 7-δ thin films. Below Tc, certain phonons in undoped YBa2Cu3O7-δ (YBCO) show strong self-energy effects, which gradually vanish with increasing Ca concentration into the overdoped regime. The observed B1g symmetry two-magnon excitation peak near 2900 cm-1 in YBCO is significantly broadened, weakened, and shifts to the lower frequency with increasing Ca content, indicating the effective value of magnetic superexchange energy decreases and that the life time of the magnons becomes shorter with increasing hole concentrations.

AB - The vibrational and magnetic Raman excitation spectra were examined in overdoped Y1-xCaxBa2Cu3O 7-δ thin films. Below Tc, certain phonons in undoped YBa2Cu3O7-δ (YBCO) show strong self-energy effects, which gradually vanish with increasing Ca concentration into the overdoped regime. The observed B1g symmetry two-magnon excitation peak near 2900 cm-1 in YBCO is significantly broadened, weakened, and shifts to the lower frequency with increasing Ca content, indicating the effective value of magnetic superexchange energy decreases and that the life time of the magnons becomes shorter with increasing hole concentrations.

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DO - 10.1002/pssb.200777110

M3 - Article

AN - SCOPUS:38049184735

SN - 0370-1972

VL - 244

SP - 4598

EP - 4601

JO - Physica Status Solidi (B) Basic Research

JF - Physica Status Solidi (B) Basic Research

IS - 12

ER -

Inelastic light scattering studies of overdoped y1-xCa xBa2Cu3O7-δ thin film

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Inelastic light scattering studies of overdoped y_1-xCa _xBa₂Cu₃O_7-δ thin film