Resonant two-magnon Raman scattering in cuprate antiferromagnetic insulators

被引：89
作者：
Blumberg, G
Abbamonte, P
Klein, MV
Lee, WC
Ginsberg, DM
Miller, LL
Zibold, A
机构：
[1] UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
[2] INST CHEM PHYS & BIOPHYS,EE-0001 TALLINN,ESTONIA
[3] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011
[4] UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.53.R11930
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present results of low-temperature two-magnon resonance Raman excitation profile measurements for single-layer Sr2CuO2Cl2 and bilayer YBa2Cu3O6+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 theory of Chubukov and Frenkel [Phys. Rev. Lett. 74, 3057 (1995)] and deduce information about magnetic interaction and band parameters in these materials.
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页码：11930 / 11933
页数：4
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