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题名: Two-band model of Raman scattering on electron-doped high-T(c) superconductors
作者: Liu, C. S. ;  Luo, H. G. ;  Wu, W. C. ;  Xiang, T.
刊名: PHYSICAL REVIEW B
出版日期: 2006
卷号: 73, 期号:17, 页码:-
关键词: HIGH-TEMPERATURE SUPERCONDUCTOR ;  TRANSPORT-PROPERTIES ;  ANISOTROPY ;  GAP
学科分类: Physics
通讯作者: Liu, CS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Natl Taiwan Normal Univ, Dept Phys, Taipei 11650, Taiwan; Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
英文摘要: We have analyzed the B(1g) and B(2g) Raman spectra of electron-doped cuprate superconductors Nd(2-x)Ce(x)CuO(4) and Pr(2-x)Ce(x)CuO(4) using a weakly coupled two-band model. One of these two bands is centered around (+/-pi/2,+/-pi/2) and couples more strongly with the B(2g) mode, while the other is centered around (+/-pi,0) and (0,+/-pi) and couples more strongly with the B(1g) mode. This model explains in a natural way why the B(2g) Raman peak occurs at a higher frequency than the B(1g) one at optimal doping, and how these two peaks change with doping in agreement with experiments. The result thus supports that there are two kinds of quasiparticles in electron-doped cuprates and d(x)(2)-y(2)-wave superconductivity is driven by the holelike band and a proximity effect on the electronlike band.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5991
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Liu, C. S.,Luo, H. G.,Wu, W. C.,et al. Two-band model of Raman scattering on electron-doped high-T(c) superconductors[J]. PHYSICAL REVIEW B,2006,73(17):-.
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