Electronic structure of Ce2RhIn8: A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy

Title
Electronic structure of Ce2RhIn8: A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy
Authors
류혜진Rui JiangDaixing MouChang LiuXin ZhaoYongxin YaoC. PetrovicKai-Ming HoAdam Kaminski
Issue Date
2015-04
Publisher
Physical review B, Condensed matter and materials physics
Citation
VOL 91, NO 16-165101-5
Abstract
We use angle-resolved photoemission spectroscopy (ARPES) to study the two-dimensional (2D) heavy-fermion superconductor, Ce2RhIn8. The Fermi surface is rather complicated and consists of several hole and electron pockets with one of the sheets displaying strong nesting properties with a q vector of (0.32, 0.32) pi/a. We do not observe k(z) dispersion of the Fermi sheets, which is consistent with the expected 2D character of the electronic structure. Comparison of the ARPES data to band-structure calculations suggests that a localized picture of the f electrons works best. While there is some agreement in the overall band dispersion and location of the Fermi sheets, the model does not reproduce all observed bands and is not completely accurate for those it does. Our data paves the way for improving the band-structure calculations and the general understanding of the transport and thermodynamical properties of this material.
URI
http://pubs.kist.re.kr/handle/201004/70360
ISSN
2469-9950
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KIST Publication > Article
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