INFRARED PROBE OF TRANSITION FROM SUPERCONDUCTOR TO NONMETAL IN YBA2(CU1-XZNX)(4)O-8

Authors
BASOV DN DABROWSKI B TIMUSK T
Citation
Dn. Basov et al., INFRARED PROBE OF TRANSITION FROM SUPERCONDUCTOR TO NONMETAL IN YBA2(CU1-XZNX)(4)O-8, Physical review letters, 81(10), 1998, pp. 2132-2135
Citations number
38
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
81
Issue
10
Year of publication
1998
Pages
2132 - 2135
Database
ISI
SICI code
0031-9007(1998)81:10<2132:IPOTFS>2.0.ZU;2-M
Abstract
We report on a study of the optical conductivity of single crystals of the high-T-c superconductor YBa2Cu4O8; in which superconductivity is suppressed by random substitution of Cu with Zn. The a-axis infrared s pectrum, which is a direct measure of the charge dynamics in the CuO2 planes, is dominated by a bound state at approximate to 120 cm(-1). Th is indicates that the low-energy electronic stales are on the verge of localization driven by the Zn impurities.