Doping dependence of the (pi, pi) shadow band in La-based cuprates studied by angle-resolved photoemission spectroscopy
文献类型：期刊论文
| 作者 | He, RH ; Zhou, XJ ; Hashimoto, M ; Yoshida, T ; Tanaka, K ; Mo, SK ; Sasagawa, T ; Mannella, N ; Meevasana, W ; Yao, H ; Fujita, M ; Adachi, T ; Komiya, S ; Uchida, S ; Ando, Y ; Zhou, F ; Zhao, ZX ; Fujimori, A ; Koike, Y ; Yamada, K ; Hussain, Z ; Shen, ZX |
| 刊名 | NEW JOURNAL OF PHYSICS
 |
| 出版日期 | 2011 |
| 卷号 | 13 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTORS PHASE-TRANSITION FERMI-SURFACE FLUCTUATING STRIPES SYMMETRY-BREAKING ENERGY GAPS BI2SR2CACU2O8+X LA2-XSRXCUO4 EXCITATIONS PSEUDOGAP |
| ISSN号 | 1367-2630 |
| 通讯作者 | He, RH: Stanford Univ, Dept Phys, Geballe Lab Adv Mat, Stanford, CA 94305 USA. |
| 中文摘要 | The (pi, pi) shadow band (SB) in the La-based cuprate family (La214) was studied by angle-resolved photoemission spectroscopy over a wide doping range from x = 0.01 to x = 0.25. Unlike the well-studied case of the Bi-based cuprate family, an overall strong, monotonic doping dependence of the SB intensity at the Fermi level (E-F) was observed. In contrast to a previous report for the presence of the SB only close to x = 1/8, we found that it exists in a wide doping range, associated with a doping-independent (pi, pi) wave vector but a strongly doping-dependent intensity: it is strongest at x similar to 0.03 and systematically diminishes as the doping increases until it becomes negligible in the overdoped regime. This SB with the observed doping dependence of intensity can in principle be caused by the antiferromagnetic fluctuations or a particular form of low-temperature orthorhombic lattice distortion known to persist up to x similar to 0.21 in the system, with both being weakened with increasing doping. However, a detailed binding-energy-dependent analysis of the SB at x = 0.07 does not appear to support the former interpretation, leaving the latter as a more plausible candidate, despite a challenge in quantitatively linking the doping dependences of the SB intensity and the magnitude of the lattice distortion. Our finding highlights the necessity for a careful and global consideration of the inherent structural complications for correctly understanding the cuprate Fermiology and its microscopic implication. |
| 收录类别 | SCI |
| 资助信息 | SGF; DOE Office of Basic Energy Sciences [DE-AC02-76SF00515, DE-AC02-05CH11231]; NSF [DMR-0604701]; MEXT (Japan) [20540342, 19340090] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36186]  |
| 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 | He, RH,Zhou, XJ,Hashimoto, M,et al. Doping dependence of the (pi, pi) shadow band in La-based cuprates studied by angle-resolved photoemission spectroscopy[J]. NEW JOURNAL OF PHYSICS,2011,13. |
| APA | He, RH.,Zhou, XJ.,Hashimoto, M.,Yoshida, T.,Tanaka, K.,...&Shen, ZX.(2011).Doping dependence of the (pi, pi) shadow band in La-based cuprates studied by angle-resolved photoemission spectroscopy.NEW JOURNAL OF PHYSICS,13. |
| MLA | He, RH,et al."Doping dependence of the (pi, pi) shadow band in La-based cuprates studied by angle-resolved photoemission spectroscopy".NEW JOURNAL OF PHYSICS 13(2011). |
入库方式： OAI收割
来源：物理研究所
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