HOLE-DOPING EFFECT ON SPIN GAPS IN SR(14-X)A(X)CU(24)O(41) (A = CA, YAND LA) BY NMR-STUDIES

Authors
KUMAGAI K TSUJI S MAKI K KATO M KOIKE Y
Citation
K. Kumagai et al., HOLE-DOPING EFFECT ON SPIN GAPS IN SR(14-X)A(X)CU(24)O(41) (A = CA, YAND LA) BY NMR-STUDIES, Physica. C, Superconductivity, 282, 1997, pp. 1343-1344
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
3
Pages
1343 - 1344
Database
ISI
SICI code
0921-4534(1997)282:<1343:HEOSGI>2.0.ZU;2-G
Abstract
Hole-doping effects on spin dynamics of Sr(14-x)A(x)Cu(24)O(41) (A=Ca, Y and La) are investigated by Cu-NMR and NQR. The energy gaps in the spin excitation spectra (spin gap) are confirmed both for the CuO2 cha in and the Cu2O3 ladder. The spin gap for the ladder decreases with in creasing x in Sr14-xCaxCu24O41 and seems to collapse around x similar to 13. Preliminary NMR/NQR results of single crystals of Sr14-xCaxCu24 O41 are reported.