论文类型：期刊论文
第一作者：T. Qian
通讯作者：H. Ding
合写作者：H.-H. Wen,P. Cheng,Z. Fang,X. Dai,G. Xu,X.-P. Wang,Y.-M. Xu,M. Neupane,T. Takahashi,T. Sato,T. Kawahara,P. Richard,K. Nakayama,Y.-B. Shi,N. Xu
发表刊物：Physical Review B
收录刊物：SCI
学科门类：物理学
文献类型：J
卷号：83
期号：14
页面范围：140513
ISSN号：2469-9950
发表时间：2011-04-29
影响因子：3.691
摘要：We have performed an angle-resolved photoemission spectroscopy study of the iron-based superconductor (SC) Sr 2 VFeAsO 3. While V 3 d orbitals are found to be in a Mott-insulating state and show an incoherent peak at~ 1 eV below the Fermi level, the dispersive Fe 3 d bands form several hole-and electronlike Fermi surfaces (FSs), some of which are quasinested by the (π, 0) wave vector. This differs from the local-density approximation (LDA) calculations, which predict non-nested FSs for this material. However, LDA+ U with a large effective Hubbard energy U on V 3 d electrons can reproduce the experimental observation reasonably well. The observed fermiology in SC Sr 2 VFeAsO 3 strongly supports that (π, 0) interband scattering between quasinested FSs may play an important role for SC in pnictides.
发布期刊链接：https://journals.aps.org/prb/abstract/10.1103/PhysRevB.83.140513