RESONANT 2-MAGNON RAMAN-SCATTERING IN CUPRATE ANTIFERROMAGNETIC INSULATORS

Authors
BLUMBERG G ABBAMONTE P KLEIN MV LEE WC GINSBERG DM MILLER LL ZIBOLD A
Citation
G. Blumberg et al., RESONANT 2-MAGNON RAMAN-SCATTERING IN CUPRATE ANTIFERROMAGNETIC INSULATORS, Physical review. B, Condensed matter, 53(18), 1996, pp. 11930-11933
Citations number
43
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
53
Issue
18
Year of publication
1996
Pages
11930 - 11933
Database
ISI
SICI code
0163-1829(1996)53:18<11930:R2RICA>2.0.ZU;2-0
Abstract
We present results of low-temperature two-magnon resonance Raman excit ation profile measurements for single-layer Sr2CuO2Cl2 and bilayer YBa 2Cu3O6+delta antiferromagnets over the excitation region from 1.65 to 3.05 eV. These data reveal composite structure of the two-magnon line shape and strong nonmonotic dependence of the scattering intensity on excitation energy. We analyze these data using the triple resonance th eory of Chubukov and Frenkel [Phys. Rev. Lett. 74, 3057 (1995)] and de duce information about magnetic interaction and band parameters in the se materials.