63'65Cu NMR and NQR studies of YBa2Cu307\_ b are described for compositions, 6, of 0.0, 0.3, and 0.9. Spin-lattice relaxation rates in YBazCu307 reveal significantly different electron dynamics at the two Cu sites in both the normal and superconducting states. In YBa2Cu306.7, the relaxation rates of
✦ LIBER ✦
NMR and NQR investigation of high-Tc superconductors
✍ Scribed by H. Lütgemeier
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 308 KB
- Volume
- 153-155
- Category
- Article
- ISSN
- 0921-4534
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From systematic measurements of TI, Knight shift, NQR frequency of 63Cu and ~70 with high-pressure measurement in high-Tc materials, La2\_;,SrxCuO4, YBa2Cu307 and T12Ba2CuO6+ e the following results have been obtained. The staggered susceptibility at the zone boundary, X(Q) which is a measure of the