Neutron scattering study of the Tm2Ir2 O7 pyrochlore iridate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10448406" target="_blank" >RIV/00216208:11320/22:10448406 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-y.mbzm5oG" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-y.mbzm5oG</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.106.094408" target="_blank" >10.1103/PhysRevB.106.094408</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Neutron scattering study of the Tm2Ir2 O7 pyrochlore iridate

Popis výsledku v původním jazyce

The newly synthesized Tm2Ir2O7 iridate is investigated using neutron scattering techniques. Powder neutron diffraction patterns confirm that Tm2Ir2O7 crystallizes in a cubic structure of pyrochlore type, consistent with the rest of the rare-earth A2Ir2O7 series, and the crystal structure is preserved down to 0.2 K. The thermal expansion of the crystal lattice is well described by a Debye model of lattice vibrations. A weak magnetic signal consistent with the so-called all-in-all-out magnetic order (AIAO) is traced at low temperature; however, it cannot serve as unambiguous evidence of the AIAO structure in the compound. Nondispersive magnetic excitations in energy-momentum space are observed in inelastic neutron scattering spectra of Tm2Ir2O7. The crystal-field scheme and parameters of the thulium iridate are refined and discussed with respect to the specific heat and magnetization data. The results are supported by mean-field calculations.

Název v anglickém jazyce

Neutron scattering study of the Tm2Ir2 O7 pyrochlore iridate

Popis výsledku anglicky

The newly synthesized Tm2Ir2O7 iridate is investigated using neutron scattering techniques. Powder neutron diffraction patterns confirm that Tm2Ir2O7 crystallizes in a cubic structure of pyrochlore type, consistent with the rest of the rare-earth A2Ir2O7 series, and the crystal structure is preserved down to 0.2 K. The thermal expansion of the crystal lattice is well described by a Debye model of lattice vibrations. A weak magnetic signal consistent with the so-called all-in-all-out magnetic order (AIAO) is traced at low temperature; however, it cannot serve as unambiguous evidence of the AIAO structure in the compound. Nondispersive magnetic excitations in energy-momentum space are observed in inelastic neutron scattering spectra of Tm2Ir2O7. The crystal-field scheme and parameters of the thulium iridate are refined and discussed with respect to the specific heat and magnetization data. The results are supported by mean-field calculations.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Physical Review B [online]

ISSN

2469-9969

e-ISSN

—

Svazek periodika

106

Číslo periodika v rámci svazku

září

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

094408

Kód UT WoS článku

000892186800001

EID výsledku v databázi Scopus

2-s2.0-85138130465