|
|
| VOLUME 91 | ISSUE 2 |
PAGE 89
|
| Dynamics and distribution of doped holes in the CuO2 plane of slightly doped antiferromagnetic YBa2(Cu1-zLiz)3O6+x (x < 0.1) studied by Cu(1) NQR
|
A. V. Savinkov, A. V. Dooglav, H. Alloul*, P. Mendels*, J. Bobroff*, G. Collin*, N. Blanchard*
Laboratory of Magnetic Resonance, Kazan State University, 420008 Kazan, Russia
*Laboratoire de Physique des Solides, Université Paris-Sud, UMR 8502, F-91405 Orsay, France
|
Abstract
Incidence of doped holes in the CuO2 plane on the AF
state was studied by Cu(1) nuclear quadrupole resonance (NQR) in
slightly doped YBa2(Cu1-zLiz)3O6+x
compounds. Inhomogeneous distribution of doped holes in the plane
was detected in the low temperature measurements of transverse
(1/T2) and longitudinal (1/T1) relaxation rates. We establish
that at lower T the holes motion slows down and we estimate that
the holes localize finally in restricted regions ( lattice
constants) in the Coulomb potential of the Li+ ions. Also we
compared the hole behavior in slightly doped
YBa2(Cu1-zLiz)3O6+x
samples with that in slightly doped Y1-yCayBa2Cu3O6.
A stronger trapping potential of the in-plane Li+
impurities was concluded as compared to slightly doped
Y1-yCayBa2Cu3O6 compound with out-of-plane
Ca2+ impurities.
|
|
|
Download PS file (GZipped, 268.7K)
|
Download PDF file (277.7K)
|
|
Список работ, цитирующих данную статью, см. здесь.
List of articles citing this article can be found here.
|
|
Home