SUPPRESSION OF THE SUPERCONDUCTING GAP AND THE SPIN-FLUCTUATION GAP OF YBA2CU3OY (Y=7.0 AND 6.76) BY ZN SUBSTITUTION AS MEASURED BY GD3-SPIN-RESONANCE( ELECTRON)

Authors
JANOSSY A COOPER JR BRUNEL LC CARRINGTON A
Citation
A. Janossy et al., SUPPRESSION OF THE SUPERCONDUCTING GAP AND THE SPIN-FLUCTUATION GAP OF YBA2CU3OY (Y=7.0 AND 6.76) BY ZN SUBSTITUTION AS MEASURED BY GD3-SPIN-RESONANCE( ELECTRON), Physical review. B, Condensed matter, 50(5), 1994, pp. 3442-3445
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
5
Year of publication
1994
Pages
3442 - 3445
Database
ISI
SICI code
0163-1829(1994)50:5<3442:SOTSGA>2.0.ZU;2-8
Abstract
The local susceptibility around Zn atoms in Gd-doped YBa2(Cu0.97Zn0.03 )3Oy has been measured by the electron-spin-resonance Knight shift of Gd3+ at 245 GHz. The magnitude and distribution of the shifts are comp ared with the corresponding data for compounds with no Zn. For both y = 7. 0 and 6.76 the full density of states (corresponding to the high- temperature normal state of the pure y = 7.0 compound) is restored at the first-neighbor sites of Zn atoms irrespective of whether the mater ial is superconducting or not. This shows that both the superconductin g gap and the spin-fluctuation gap are locally suppressed by Zn substi tution.