Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Three-Dimensional Electronic Structure of Superconducting Iron Pnictides Observed by Angle-Resolved Photoemission Spectroscopy
Walid MalaebTeppei YoshidaAtsushi FujimoriMasato KubotaKanta OnoKunihiro KihouParasharam M. ShirageHijiri KitoAkira IyoHiroshi EisakiYasuyuki NakajimaTsuyoshi TamegaiRyotaro Arita
Author information
JOURNAL RESTRICTED ACCESS

2009 Volume 78 Issue 12 Pages 123706

Details
Abstract

We have performed an angle-resolved photoemission spectroscopy (ARPES) study of the undoped and electron-doped iron pnictides BaFe2−xCoxAs2 (Ba122) (x=0,0.14) and studied the Fermi surfaces (FSs) and band dispersions near the Fermi level. The FS sheets we observed are consistent with the shrinkage of the hole-like pockets around the Brillouin Zone (BZ) center and the expansion of the electron pockets around the BZ corner in the electron-doped compound as compared to the undoped parent compound. Band dispersions and FSs around the BZ center strongly depend on the photon energy, indicating a three-dimensional (3D) electronic structure. This observation suggests that antiferromagnetism and superconductivity in the pnictides have to be described in terms of an orbital-dependent 3D electronic structure, where FS nesting is not necessarily strong.

Information related to the author

This article cannot obtain the latest cited-by information.

© The Physical Society of Japan 2009
Previous article Next article
feedback
Top