Strain-induced orders-of-magnitude reduction of hopping conductivity in epitaxial SrTiO3 films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00639284" target="_blank" >RIV/68378271:_____/25:00639284 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0369742" target="_blank" >https://hdl.handle.net/11104/0369742</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0248159" target="_blank" >10.1063/5.0248159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Strain-induced orders-of-magnitude reduction of hopping conductivity in epitaxial SrTiO3 films

Popis výsledku v původním jazyce

Rational control of the electronic properties including charge transport is essential for nearly all applications of ABO3 ferroelectrics. Whereas such control is critical for advanced devices using thin epitaxial films, the effects of epitaxy on the electrical conductivity are not fully acknowledged. Here, unprecedented orders-of-magnitude decrease in conductivity with increasing substrate-induced strain to less than 1 % is demonstrated in epitaxial films of pure archetypal representative perovskite SrTiO3 as well as of (Mn, Fe, Co, Ni)-doped SrTiO3. The effect is analyzed in terms of small-polaron localization and hopping. The experimental evidence for hopping and the theoretical justification for strain-induced fall of the hopping mobility are presented. The discovered massive epitaxial suppression of the electrical hopping conductivity is anticipated for many ABO3 films in general.n

Název v anglickém jazyce

Strain-induced orders-of-magnitude reduction of hopping conductivity in epitaxial SrTiO3 films

Popis výsledku anglicky

Rational control of the electronic properties including charge transport is essential for nearly all applications of ABO3 ferroelectrics. Whereas such control is critical for advanced devices using thin epitaxial films, the effects of epitaxy on the electrical conductivity are not fully acknowledged. Here, unprecedented orders-of-magnitude decrease in conductivity with increasing substrate-induced strain to less than 1 % is demonstrated in epitaxial films of pure archetypal representative perovskite SrTiO3 as well as of (Mn, Fe, Co, Ni)-doped SrTiO3. The effect is analyzed in terms of small-polaron localization and hopping. The experimental evidence for hopping and the theoretical justification for strain-induced fall of the hopping mobility are presented. The discovered massive epitaxial suppression of the electrical hopping conductivity is anticipated for many ABO3 films in general.n

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/GA22-10832S" target="_blank" >GA22-10832S: Polaronické feroelektrické vrstvy pro neuromorfní systémy</a><br>

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

APL Materials

ISSN

2166-532X

e-ISSN

2166-532X

Svazek periodika

13

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

031101

Kód UT WoS článku

001437420400005

EID výsledku v databázi Scopus

2-s2.0-86000354377