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Two-band model of Raman scattering on electron-doped high-T(c) superconductors
Liu, C. S.; Luo, H. G.; Wu, W. C.; Xiang, T.; Liu, CS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号73期号:17页码:-
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.
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
关键词High-temperature Superconductor Transport-properties Anisotropy Gap
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5991
专题理论物理所1978-2010年知识产出
通讯作者Liu, CS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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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):-.
APA Liu, C. S.,Luo, H. G.,Wu, W. C.,Xiang, T.,&Liu, CS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).Two-band model of Raman scattering on electron-doped high-T(c) superconductors.PHYSICAL REVIEW B,73(17),-.
MLA Liu, C. S.,et al."Two-band model of Raman scattering on electron-doped high-T(c) superconductors".PHYSICAL REVIEW B 73.17(2006):-.
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