Small-polaron transport in perovskite nickelates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00617509" target="_blank" >RIV/68378271:_____/23:00617509 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0364399" target="_blank" >https://hdl.handle.net/11104/0364399</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-023-39821-z" target="_blank" >10.1038/s41598-023-39821-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Small-polaron transport in perovskite nickelates

Popis výsledku v původním jazyce

Knowledge of the explicit mechanisms of charge transport is preeminent for a fundamental understanding of the metal‑to‑insulator transition in ABO3‑type perovskite rare‑earth nickelates and for potential applications of these technologically promising materials. Here we suggest that owing to intrinsic Jahn–Teller‑driven carrier localization, small‑polaron transport is innate in nickelates. We demonstrate experimental evidence for such transport by investigating AC conductivity over a broad range of temperatures and frequencies in epitaxial SmNiO3 films. We reveal the hopping mechanism of conductivity, Holstein‑type activation energy for hopping, nonclassical relaxation behavior, and nonclassical consistency between activation and relaxation. By analyzing these observations, we validate small‑polaron transport. We anticipate that our findings can lead to precise tailoring of the DC and AC conductivity in nickelates as requested for fruitful employment of these materials. We also believe that further investigations of self‑trapped small polarons are essential for a comprehensive understanding of nickelates.

Název v anglickém jazyce

Small-polaron transport in perovskite nickelates

Popis výsledku anglicky

Knowledge of the explicit mechanisms of charge transport is preeminent for a fundamental understanding of the metal‑to‑insulator transition in ABO3‑type perovskite rare‑earth nickelates and for potential applications of these technologically promising materials. Here we suggest that owing to intrinsic Jahn–Teller‑driven carrier localization, small‑polaron transport is innate in nickelates. We demonstrate experimental evidence for such transport by investigating AC conductivity over a broad range of temperatures and frequencies in epitaxial SmNiO3 films. We reveal the hopping mechanism of conductivity, Holstein‑type activation energy for hopping, nonclassical relaxation behavior, and nonclassical consistency between activation and relaxation. By analyzing these observations, we validate small‑polaron transport. We anticipate that our findings can lead to precise tailoring of the DC and AC conductivity in nickelates as requested for fruitful employment of these materials. We also believe that further investigations of self‑trapped small polarons are essential for a comprehensive understanding of nickelates.

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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Svazek periodika

13

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

12493

Kód UT WoS článku

001107684000076

EID výsledku v databázi Scopus

2-s2.0-85167435583