Angle-resolved photoemission study of Sr2RuO4
文献类型：期刊论文
| 作者 | Yokoya, T ; Chainani, A ; Takahashi, T ; Ding, H ; Campuzano, JC ; KatayamaYoshida, H ; Kasai, M ; Tokura, Y |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1996 |
| 卷号 | 54期号:18页码:13311 |
| 关键词 | SADDLE-POINT SINGULARITY BAND-STRUCTURE FERMI-SURFACE TRANSITION YBA2CU4O8 SR2IR1-XRUXO4 SPECTROSCOPY YBA2CU3O6.9 |
| ISSN号 | 0163-1829 |
| 通讯作者 | Yokoya, T (reprint author), TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 98077,JAPAN. |
| 中文摘要 | We present high-resolution (HR) angle-resolved photoemission spectroscopy (ARPES) measurements of the noncuprate layered perovskite superconductor Sr2RuO4. ARPES spectra of the whole valence-band region obtained along two high-symmetry directions in the Brillouin zone show clear dispersion, generally similar to that of a band calculation. However, HRARPES measurements taken in the vicinity of the Fermi level (E(F)) show narrower Ru4d epsilon(xy,yz,zx)-O2p pi antibonding bands than those predicted by the band calculation. More significantly, there is an extended van Hove singularity very close to E(F) (E(B)=11 meV) along the Ru-O bonding direction, which is known to exist in cuprate high-temperature superconductors. The Fermi-surface topology obtained by HRARPES (one electronlike Fermi surface sheet centered at the Gamma point and two holelike sheets centered at the X point) is different from the band calculation (two electronlike sheets centered at the Gamma point and one holelike sheet centered at the X point), although the electron count is the same in both cases. These results suggest that electron-electron correlations cause the modification of the Fermi-surface topology, and is thus necessary for understanding the electronic structure and properties of Sr2RuO4. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-02-20 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57987]  |
| 专题 | 物理研究所_所内人员在其他单位发表论文题录信息_所内人员在其他单位发表论文题录信息_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yokoya, T,Chainani, A,Takahashi, T,et al. Angle-resolved photoemission study of Sr2RuO4[J]. PHYSICAL REVIEW B,1996,54(18):13311. |
| APA | Yokoya, T.,Chainani, A.,Takahashi, T.,Ding, H.,Campuzano, JC.,...&Tokura, Y.(1996).Angle-resolved photoemission study of Sr2RuO4.PHYSICAL REVIEW B,54(18),13311. |
| MLA | Yokoya, T,et al."Angle-resolved photoemission study of Sr2RuO4".PHYSICAL REVIEW B 54.18(1996):13311. |
入库方式： OAI收割
来源：物理研究所
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