Details
| Original language | English |
|---|---|
| Pages (from-to) | 393-396 |
| Number of pages | 4 |
| Journal | Solid state communications |
| Volume | 85 |
| Issue number | 5 |
| Publication status | Published - Feb 1993 |
Abstract
We have studied the optical absorption of the Cu-oxide families Y1Ba2Cu3O7-δ (YBC), La2CuO4+δ (LC)and Bi2Sr2Ca1-xYxCu2O8+δ (BSCC). Metallic/superconducting members show a broad peak in the near infrared (NIR) spectral range 1000-7000 cm-1, which is superimposed to a second absorption feature. The temperature dependence of the NIR absorption is related to the superconducting phase transition for all high Tc members investigated in so far. Quantitative data analysis is given for the spectra of the BSCC system. The results suggest the coexistence of localized (small polaron) and delocalized (band) states at the Fermienergy, responsible for the doping dependent metal/insulator transition and possibly the high Tc.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Materials Chemistry
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In: Solid state communications, Vol. 85, No. 5, 02.1993, p. 393-396.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The optical absorption of the high Tc superconductors Y1Ba2Cu3O7-δ, La2CuO4+δ and Bi2Sr2Ca1-xCu2O8+δ
AU - Rüscher, Claus H.
AU - Götte, Matthias
PY - 1993/2
Y1 - 1993/2
N2 - We have studied the optical absorption of the Cu-oxide families Y1Ba2Cu3O7-δ (YBC), La2CuO4+δ (LC)and Bi2Sr2Ca1-xYxCu2O8+δ (BSCC). Metallic/superconducting members show a broad peak in the near infrared (NIR) spectral range 1000-7000 cm-1, which is superimposed to a second absorption feature. The temperature dependence of the NIR absorption is related to the superconducting phase transition for all high Tc members investigated in so far. Quantitative data analysis is given for the spectra of the BSCC system. The results suggest the coexistence of localized (small polaron) and delocalized (band) states at the Fermienergy, responsible for the doping dependent metal/insulator transition and possibly the high Tc.
AB - We have studied the optical absorption of the Cu-oxide families Y1Ba2Cu3O7-δ (YBC), La2CuO4+δ (LC)and Bi2Sr2Ca1-xYxCu2O8+δ (BSCC). Metallic/superconducting members show a broad peak in the near infrared (NIR) spectral range 1000-7000 cm-1, which is superimposed to a second absorption feature. The temperature dependence of the NIR absorption is related to the superconducting phase transition for all high Tc members investigated in so far. Quantitative data analysis is given for the spectra of the BSCC system. The results suggest the coexistence of localized (small polaron) and delocalized (band) states at the Fermienergy, responsible for the doping dependent metal/insulator transition and possibly the high Tc.
UR - http://www.scopus.com/inward/record.url?scp=0027542945&partnerID=8YFLogxK
U2 - 10.1016/0038-1098(93)90686-H
DO - 10.1016/0038-1098(93)90686-H
M3 - Article
AN - SCOPUS:0027542945
VL - 85
SP - 393
EP - 396
JO - Solid state communications
JF - Solid state communications
SN - 0038-1098
IS - 5
ER -