INFLUENCE OF OXYGEN-ORDERING KINETICS ON RAMAN AND OPTICAL-RESPONSE IN YBA2CU3O6.4

Authors
MAKSIMOV AA PRONIN DA ZAITSEV SV TARTAKOVSKII II BLUMBERG G KLEIN MV KARLOW M COOPER SL PAULIKAS AP VEAL BW
Citation
Aa. Maksimov et al., INFLUENCE OF OXYGEN-ORDERING KINETICS ON RAMAN AND OPTICAL-RESPONSE IN YBA2CU3O6.4, Physical review. B, Condensed matter, 54(10), 1996, pp. 6901-6904
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
10
Year of publication
1996
Pages
6901 - 6904
Database
ISI
SICI code
0163-1829(1996)54:10<6901:IOOKOR>2.0.ZU;2-7
Abstract
Kinetics of the optical and Raman response in YBa2Cu3O6.4 were studied during room-temperature annealing following heat treatment. The super conducting T-c, dc resistivity, and low-energy optical conductivity re cover slowly, implying a long relaxation time for the carrier density. Short relaxation times are observed for the B-1g Raman scattering-mag netic, continuum, and phonon-and the charge transfer band. Monte Carlo simulations suggest that these two relaxation rates are related to tw o length scales corresponding to local oxygen ordering (fast) and long chain and twin formation (slow).