s-wave-like excitation in the superconducting state of electron-doped cuprates with d-wave pairing
文献类型：期刊论文
| 作者 | Yuan, QS ; Yan, XZ ; Ting, CS |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2006 |
| 卷号 | 74期号:21 |
| 关键词 | ND1.85CE0.15CUO4 BEHAVIOR ORDER |
| ISSN号 | 1098-0121 |
| 通讯作者 | Yuan, QS (reprint author), Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA. |
| 中文摘要 | An intrinsic physical mechanism, based on the doping evolution of the Fermi surface (FS), is explored to reconcile the contradictory experimental results on the superconducting (SC) pairing symmetry in electron-doped cuprates. It is argued that the FS pocket around (pi/2,pi/2) has not yet formed until doping reaches about the optimal value. Therefore in the underdoped regime, even if the SC order parameter is d-wave which vanishes along the line k(x)=k(y), the quasiparticle excitation gap is still finite and looks s-wave-like due to the absence of the FS across that line. This makes it possible, with d-wave SC pairing, to understand those experiments which evidenced the s-wave quasiparticle excitation. An explicit theory with consideration of both antiferromagnetic and SC orders is implemented to exhibit the FS evolution from underdoping to overdoping and associated with it the variations of the quasiparticle property, electronic density of states, and low-temperature dependences of the physical quantities heat capacity and superfluid density. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54249]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yuan, QS,Yan, XZ,Ting, CS. s-wave-like excitation in the superconducting state of electron-doped cuprates with d-wave pairing[J]. PHYSICAL REVIEW B,2006,74(21). |
| APA | Yuan, QS,Yan, XZ,&Ting, CS.(2006).s-wave-like excitation in the superconducting state of electron-doped cuprates with d-wave pairing.PHYSICAL REVIEW B,74(21). |
| MLA | Yuan, QS,et al."s-wave-like excitation in the superconducting state of electron-doped cuprates with d-wave pairing".PHYSICAL REVIEW B 74.21(2006). |
入库方式： OAI收割
来源：物理研究所
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