Competing electronic states emerging on polar surfaces
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10456793" target="_blank" >RIV/00216208:11320/22:10456793 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=a~eggZWBUr" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=a~eggZWBUr</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41467-022-31953-6" target="_blank" >10.1038/s41467-022-31953-6</a>
Alternative languages
Result language
angličtina
Original language name
Competing electronic states emerging on polar surfaces
Original language description
Excess charge on polar surfaces of ionic compounds is commonly described by the two-dimensional electron gas (2DEG) model, a homogeneous distribution of charge, spatially-confined in a few atomic layers. Here, by combining scanning probe microscopy with density functional theory calculations, we show that excess charge on the polar TaO2 termination of KTaO3(001) forms more complex electronic states with different degrees of spatial and electronic localization: charge density waves (CDW) coexist with strongly-localized electron polarons and bipolarons. These surface electronic reconstructions, originating from the combined action of electron-lattice interaction and electronic correlation, are energetically more favorable than the 2DEG solution. They exhibit distinct spectroscopy signals and impact on the surface properties, as manifested by a local suppression of ferroelectric distortions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/GX20-21727X" target="_blank" >GX20-21727X: Ferroelectric Perovskites for Energy Applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Communications [online]
ISSN
2041-1723
e-ISSN
2041-1723
Volume of the periodical
13
Issue of the periodical within the volume
Jul
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
4311
UT code for WoS article
001017820700001
EID of the result in the Scopus database
2-s2.0-85134748487