Polaronic Hall mobility in neodymium nickelate films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00635668" target="_blank" >RIV/68378271:_____/25:00635668 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jpcs.2025.112837" target="_blank" >https://doi.org/10.1016/j.jpcs.2025.112837</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpcs.2025.112837" target="_blank" >10.1016/j.jpcs.2025.112837</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Polaronic Hall mobility in neodymium nickelate films

Popis výsledku v původním jazyce

Knowledge of the carrier mobility is essential for identifying and understanding charge transport mechanisms. This is especially relevant in rare-earth perovskite nickelates ReNiO3, which exhibit an orders-of-magnitude increase in electrical conductivity upon heating. Here, by studying the conductivity and the Hall effect in thin epitaxial films of neodymium nickelate NdNiO3, we experimentally establish the Hall mobility over a temperature interval of 4–400 K. The Hall mobility is found to be smaller than 1 cm2∕Vs at all temperatures, which indicates carrier localization. A temperature analysis of the conductivity, the Hall coefficient, and the Hall mobility reveals the hopping of small polarons in the low-temperature insulator state, the possible transport of large polarons in the high-temperature conducting state, and percolation-type behavior in the transitional region. The evidenced polaronic transport is suggested to be innate in nickelates.

Název v anglickém jazyce

Polaronic Hall mobility in neodymium nickelate films

Popis výsledku anglicky

Knowledge of the carrier mobility is essential for identifying and understanding charge transport mechanisms. This is especially relevant in rare-earth perovskite nickelates ReNiO3, which exhibit an orders-of-magnitude increase in electrical conductivity upon heating. Here, by studying the conductivity and the Hall effect in thin epitaxial films of neodymium nickelate NdNiO3, we experimentally establish the Hall mobility over a temperature interval of 4–400 K. The Hall mobility is found to be smaller than 1 cm2∕Vs at all temperatures, which indicates carrier localization. A temperature analysis of the conductivity, the Hall coefficient, and the Hall mobility reveals the hopping of small polarons in the low-temperature insulator state, the possible transport of large polarons in the high-temperature conducting state, and percolation-type behavior in the transitional region. The evidenced polaronic transport is suggested to be innate in 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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics and Chemistry of Solids

ISSN

0022-3697

e-ISSN

1879-2553

Svazek periodika

207

Číslo periodika v rámci svazku

Dec

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

112837

Kód UT WoS článku

001501041300001

EID výsledku v databázi Scopus

2-s2.0-105006667368