Magnetic field independence of the spin gap in YBa2Cu3O7-delta

Authors
Gorny, K Vyaselev, OM Martindale, JA Nandor, VA Pennington, CH Hammel, PC Hults, WL Smith, JL Kuhns, PL Reyes, AP Moulton, WG
Citation
K. Gorny et al., Magnetic field independence of the spin gap in YBa2Cu3O7-delta, PHYS REV L, 82(1), 1999, pp. 177-180
Citations number
16
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
1
Year of publication
1999
Pages
177 - 180
Database
ISI
SICI code
0031-9007(19990104)82:1<177:MFIOTS>2.0.ZU;2-R
Abstract
We report, for magnetic fields of 0, 8.8, and 14.8 T, measurements of the t emperature dependent Cu-63 NMR spin lattice relaxation rate for near optima lly doped YBa2Cu3O7-delta, near and above T-c. In sharp contrast with previ ous work we find no magnetic field dependence. We discuss experimental issu es arising in measurements of this required precision and implications of t he experiment regarding issues including the spin gap or pseudogap. [S0031- 9007(98)08138-1].