2019
DOI: 10.1103/physrevb.100.155110
|View full text |Cite
|
Sign up to set email alerts
|

Large Fermi surface expansion through anisotropic mixing of conduction and f electrons in the semimetallic Kondo lattice CeBi

Abstract: Using angle-resolved photoemission spectroscopy (ARPES) and resonant ARPES, we report evidence of strong anisotropic conduction-f electron mixing (c-f mixing) in CeBi by observing a largely expanded Ce-5d pocket at low temperature, with no change in the Bi-6p bands. The Fermi surface (FS) expansion is accompanied by a pronounced spectral weight transfer from the local 4f 0 peak of Ce (corresponding to Ce 3+ ) to the itinerant conduction bands near the Fermi level. Careful analysis suggests that the observed la… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

4
14
0

Year Published

2020
2020
2023
2023

Publication Types

Select...
5
2

Relationship

2
5

Authors

Journals

citations
Cited by 15 publications
(18 citation statements)
references
References 43 publications
(44 reference statements)
4
14
0
Order By: Relevance
“…For all values considered for the Kondo interaction and the electronic filling, we find that the Fermi surface of the Kondo lattice (x = 1) is large and it includes the contributions from both the conduction electrons and the Kondo spins. This universal feature is in good agreement with previous theoretical and experimental results [52,53,54,55,56,57,58,59,60,61,62]. It can be well understood in terms of Luttinger theorem, which stipulates that all fermionic degrees of freedom participate in the formation of the Fermi liquid ground state.…”
Section: Fermi Surfacessupporting
confidence: 90%
See 1 more Smart Citation
“…For all values considered for the Kondo interaction and the electronic filling, we find that the Fermi surface of the Kondo lattice (x = 1) is large and it includes the contributions from both the conduction electrons and the Kondo spins. This universal feature is in good agreement with previous theoretical and experimental results [52,53,54,55,56,57,58,59,60,61,62]. It can be well understood in terms of Luttinger theorem, which stipulates that all fermionic degrees of freedom participate in the formation of the Fermi liquid ground state.…”
Section: Fermi Surfacessupporting
confidence: 90%
“…For example, PES experiments revealed limitations of the single impurity models for describing dense Kondo systems [36,37,38]. ARPES experiments carried on varieties of Kondo lattice systems like CeRu 2 Si 2 [54,55,56], CeRu 2 Ge 2 [57], CeBi [58],CeNiSn [59] and YbRh 2 Si 2 [60,61,62] showed large Fermi surfaces due to the coherent participation of 4f electrons. ARPES experiments also permitted a direct observation of dispersive Kondo resonance peaks in CeCoGe 1.2 Si 0.8 [63] and surface and bulk hybridizations in antiferromagnetic Kondo lattice CeRh 2 Si 2 [64].…”
Section: Introductionmentioning
confidence: 99%
“…The spin-orbit coupling (SOC) effect was included in all calculations. The mBJ method could overcome the band gap underestimation and band inversion overestimation using the PBE method [11,12,29,34,36,38,44,45], which was also verified by our experimental results. Therefore, unless specifically indicated, the calculation results in this work were obtained using the mBJ method.…”
Section: Methodssupporting
confidence: 71%
“…Because angle resolved photoemission spectroscopy (ARPES) has the ability to directly reveal the band structures of materials, the band topologies of numerous RPn compounds have been experimentally studied [11-13, 25-27, 30-38]. Topological band inversion and nontrivial surface states were observed in compounds with group VI element Bi, such as LaBi [13,[30][31][32][33], SmBi [26,36], and CeBi [36][37][38], while compounds with other group VI elements were confirmed to be topologically trivial without band inversion [11, 12, 25-27, 34, 35, 37]. In those topologically trivial compounds, XMR behaviours are widely attributed to the classical electron-hole carrier compensation scenario [11,12].…”
Section: Introductionmentioning
confidence: 99%
“…The on-resonant spectrum featured two broad 4f peaks, one at −3.2 eV and the other at −0.7 eV. The deep energy peak (−3.2 eV) can be attributed to the localized 4f peak (4f 0 ), whose energy is deeper than most Kondo systems (typically between −3 and −2 eV), including prototypical low carrier density Kondo systems such as CeSb and CeBi [52,53]. Based on the single impurity Anderson model, a deeper 4f 0 peak reflects the more localized nature of 4f electrons [51].…”
Section: Resultsmentioning
confidence: 99%