Quest for a pristine unreconstructed SrTiO3(001) surface: An atomically resolved study via noncontact atomic force microscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10439715" target="_blank" >RIV/00216208:11320/21:10439715 - isvavai.cz</a>

Výsledek na webu

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

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.103.L241406" target="_blank" >10.1103/PhysRevB.103.L241406</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quest for a pristine unreconstructed SrTiO3(001) surface: An atomically resolved study via noncontact atomic force microscopy

Popis výsledku v původním jazyce

The surfaces of perovskite oxides affect their functional properties, and while a bulk-truncated (1 x 1) termination is generally assumed, its existence and stability is controversial. Here, such a surface is created by cleaving the prototypical SrTiO3 (001) in ultrahigh vacuum, and its response to thermal annealing is observed. Atomically resolved noncontact atomic force microscopy (nc-AFM) shows that intrinsic point defects on the as-cleaved surface migrate at temperatures above 200 degrees C. At 400 degrees C-500 degrees C, a disordered surface layer forms, albeit still with a (1 x 1) pattern in low-energy electron diffraction (LEED). Purely TiO2 -terminated surfaces, prepared by wet-chemical treatment, are also disordered despite their (1 x 1) periodicity in LEED.

Název v anglickém jazyce

Quest for a pristine unreconstructed SrTiO3(001) surface: An atomically resolved study via noncontact atomic force microscopy

Popis výsledku anglicky

The surfaces of perovskite oxides affect their functional properties, and while a bulk-truncated (1 x 1) termination is generally assumed, its existence and stability is controversial. Here, such a surface is created by cleaving the prototypical SrTiO3 (001) in ultrahigh vacuum, and its response to thermal annealing is observed. Atomically resolved noncontact atomic force microscopy (nc-AFM) shows that intrinsic point defects on the as-cleaved surface migrate at temperatures above 200 degrees C. At 400 degrees C-500 degrees C, a disordered surface layer forms, albeit still with a (1 x 1) pattern in low-energy electron diffraction (LEED). Purely TiO2 -terminated surfaces, prepared by wet-chemical treatment, are also disordered despite their (1 x 1) periodicity in LEED.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GX20-21727X" target="_blank" >GX20-21727X: Feroelektrické perovskity pro využití v obnovitelné energetice</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

—

Svazek periodika

103

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

L241406

Kód UT WoS článku

000661524600004

EID výsledku v databázi Scopus

2-s2.0-85108724788