Possibility of Probing the Fermi Surface of a Heavy-Fermion System by Using Angle-Resolved Photoemission Spectroscopy

Abstract

Possibility of Probing the Fermi Surface of a Heavy-Fermion System by Using Angle-Resolved Photoemission Spectroscopy Hyeong-Do Kim Beamline Division, Pohang Acelerator Laboratory, Pohang 790-784 (Received 26 November 2007) Numerical simulation results are presented to investigate whether it is possible to probe the Fermi surface (FS) of a heavy-fermion (HF) system with the experimental conditions of present state-of-the-art angle-resolved photoemission spectroscopy (ARPES) using synchrotron radiation. Since the dispersion of a HF band is one or two orders of magnitude smaller than the experimental energy resolution, conventional ARPES-intensity mapping at the Fermi level does not work, but its k-space gradient mapping can provide a FS much closer to the genuine one. If complications from non-4f conduction bands are to be removed, 4d(3d) ! 4f resonant photoemission for a Ce-based HF system is quite essential. PACS numbers: 71.18.+y, 71.27.+a, 79.60.-i