Ce3Bi4Ni3 - A large hybridization-gap variant of Ce3Bi4Pt3

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Ce3Bi4Ni3 - A large hybridization-gap variant of Ce3Bi4Pt3

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Ce3Bi4Ni3 - A large hybridization-gap variant of Ce3Bi4Pt3

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GF19-29614L" target="_blank" >GF19-29614L: Ladění spin-orbitální vazby do extrému</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review Research

ISSN

2643-1564

e-ISSN

2643-1564

Svazek periodika

6

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

023242

Kód UT WoS článku

001241207200001

EID výsledku v databázi Scopus

2-s2.0-85195197821