Ce3Bi4Ni3 - A large hybridization-gap variant of Ce3Bi4Pt3
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10481807" target="_blank" >RIV/00216208:11320/24:10481807 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Xgv9yl9o0g" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Xgv9yl9o0g</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevResearch.6.023242" target="_blank" >10.1103/PhysRevResearch.6.023242</a>
Alternative languages
Result language
angličtina
Original language name
Ce3Bi4Ni3 - A large hybridization-gap variant of Ce3Bi4Pt3
Original language description
The family of cubic noncentrosymmetric 3-4-3 compounds has become a fertile ground for the discovery of novel correlated metallic and insulating phases. Here, we report the synthesis of a new heavy fermion compound, Ce 3 Bi 4 Ni 3 . It is an isoelectronic analog of the prototypical Kondo insulator Ce 3 Bi 4 Pt 3 and of the recently discovered Weyl-Kondo semimetal Ce 3 Bi 4 Pd 3 . In contrast to the volume -preserving Pt -Pd substitution, structural and chemical analyses reveal a positive chemical pressure effect in Ce 3 Bi 4 Ni 3 relative to its heavier counterparts. Based on the results of electrical resistivity, Hall effect, magnetic susceptibility, and specific heat measurements, we identify an energy gap of 65-70 meV, about eight times larger than that in Ce 3 Bi 4 Pt 3 and about 45 times larger than that of the Kondo-insulating background hosting the Weyl nodes in Ce 3 Bi 4 Pd 3 . We show that this gap as well as other physical properties do not evolve monotonically with increasing atomic number, i.e., in the sequence Ce 3 Bi 4 Ni 3 -Ce 3 Bi 4 Pd 3 -Ce 3 Bi 4 Pt 3 , but instead with increasing partial electronic density of states of the d orbitals at the Fermi energy. This work opens the possibility to investigate the conditions under which topological states develop in this series of strongly correlated 3-4-3 materials.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GF19-29614L" target="_blank" >GF19-29614L: Driving Spin-Orbit Coupling to Extreme (exSOC)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Research
ISSN
2643-1564
e-ISSN
2643-1564
Volume of the periodical
6
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
023242
UT code for WoS article
001241207200001
EID of the result in the Scopus database
2-s2.0-85195197821