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

Jiang, Rui; Mou, Daixing; Liu, Chang; Zhao, Xin; Yao, Yongxin; Ryu, Hyejin; Petrovic, C.; Ho, Kai -Ming; Kaminski, Adam

doi:10.1103/PhysRevB.91.165101

Title: Electronic structure of ${Ce}_{2} {RhIn}_{8}$ : A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy

Journal Article · Wed Apr 01 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.91.165101· OSTI ID:1193205

Jiang, Rui ^[1]; Mou, Daixing ^[1]; Liu, Chang ^[2]; Zhao, Xin ^[1]; Yao, Yongxin ^[1]; Ryu, Hyejin ^[3]; Petrovic, C. ^[3]; Ho, Kai -Ming ^[1]; Kaminski, Adam ^[1]

Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
South Univ. of Science and Technology of China, Shenzhen (China)
Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)

In this study, we use angle-resolved photoemission spectroscopy (ARPES) to study the two-dimensional (2D) heavy-fermion superconductor, Ce₂ RhIn₈. 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) π/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.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704; AC02-07CH11358; AC02-05CH11231; AC02-98CH10886

OSTI ID:: 1193205

Alternate ID(s):: OSTI ID: 1179307; OSTI ID: 1240736

Report Number(s):: BNL-107979-2015-JA; IS-J-8613; PRBMDO; R&D Project: PM016; KC0201050

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 16; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Title: Electronic structure of ${Ce}_{2} {RhIn}_{8}$ : A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy