SPINS AND CARRIERS IN OXIDE SUPERCONDUCTORS STUDIED BY RAMAN-SCATTERING

被引：4

作者：

SUGAI, S

SATO, M

ITO, T

IDO, T

TAKAGI, H

UCHIDA, S

KOBAYASHI, T

AKIMITSU, J

HIDAKA, Y

MURAKAMI, T

HOSOYA, S

KAJITANI, T

FUKUDA, T

机构：

[1] INST MOLEC SCI, OKAZAKI, AICHI 444, JAPAN

[2] UNIV TOKYO, FAC ENGN, BUNKYO KU, TOKYO 113, JAPAN

[3] AOYAMA GAKUIN UNIV, DEPT PHYS, TOKYO 157, JAPAN

[4] NIPPON TELEGRAPH & TEL PUBL CORP, OPTO ELECTR LABS, IBARAKI 31911, JAPAN

[5] TOHOKU UNIV, INST MAT RES, SENDAI, MIYAGI 980, JAPAN

来源：

PHYSICA B-CONDENSED MATTER | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80217-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The spin and doped charge states in copper oxide superconductors were investigated by Raman spectroscopy. The anomalous magnon scattering in the antiferromagnetic insulator phases, such as the second peaks near 4J (J is the two-spin superexchange energy) in the B1g spectra and the large scattering intensities in the A1g spectra, suggests the existence of four-spin cyclic exchange interactions. When carriers are doped, the A1g spectra show non-“normal Fermi liquid” behavior. The imaginary part of the experimentally obtained susceptibility have ω-proportional part from ω~0. The gradient increases, on cooling, as in the case of the marginal Fermi liquid. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

页码：1263 / 1264

页数：2

共 6 条

[1] ELECTRONIC HAMILTONIAN AND ANTIFERROMAGNETIC INTERACTIONS IN LA2CUO4 [J].