Abstract
The ab-plane reflectivity of untwinned YBa2(Cu1-xZnx)3O7-δ single crystals is measured between 250 and 20 000 cm-1 at room temperature. Through Zn substitution, the optical conductivity along Eb shows a broad peak at about 2000 cm-1, suggesting localization of the chain band carrier. The conductivity along Ea shows no mid-infrared absorption and slightly decreases from the far- to mid-infrared region through Zn substitution. Analysis of the conductivity along Ea shows that the main effect of Zn substitution is to increase the impurity scattering rate. A small amount of carrier reduction and suppression of effective mass enhancement at low frequency are also observed. The suppression of the effective mass enhancement is discussed by the antiferromagnetic spin-fluctuation theory of Fermi liquid.
| Original language | English |
|---|---|
| Pages (from-to) | 9294-9297 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 51 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 1995 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics