Oxygen isotope effect in high-T C superconductors: Cu nuclear quadrupole resonance relaxation rates |
| |
| Authors: | T. Ohno K. Asayama |
| |
| Affiliation: | 1. Faculty of Engineering, Tokushima University, Tokushima, Japan
2. Department of Physical Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Japan
|
| |
| Abstract: | A scaling relationship has been observed between the63Cu(2) spin-lattice relaxation rates 1/T 1,(18) and 1/T 1(16) observed in18O- and16O-exchanged YBa2Cu4O8 and the normalized temperatureT/T c(18 or 16). This relation implies thatT C is decreased by the change in antiferromagnetic (AF) spin fluctuation rate. Thus oxygen isotope effect observed in high-T C superconductors does not indicate any importance of electron-phonon interaction but it appears to originate from the change in AF fluctuations. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
