Simultaneous Imaging of Dopants and Free Charge Carriers by Monochromated EELS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU146840" target="_blank" >RIV/00216305:26620/22:PU146840 - isvavai.cz</a>
Result on the web
<a href="http://pubs.acs.org/doi/10.1021/acsnano.2c07540" target="_blank" >http://pubs.acs.org/doi/10.1021/acsnano.2c07540</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.2c07540" target="_blank" >10.1021/acsnano.2c07540</a>
Alternative languages
Result language
angličtina
Original language name
Simultaneous Imaging of Dopants and Free Charge Carriers by Monochromated EELS
Original language description
Doping inhomogeneities in solids are not uncommon, but their microscopic observation and understanding are limited due to the lack of bulk-sensitive experimental techniques with high enough spatial and spectral resolution. Here, we demonstrate nanoscale imaging of both dopants and free charge carriers in La-doped BaSnO3 (BLSO) using high-resolution electron energy-loss spectroscopy (EELS). By analyzing high-and low-energy excitations in EELS, we reveal chemical and electronic inhomogeneities within a single BLSO nanocrystal. The inhomogeneous doping leads to distinctive localized infrared surface plasmons, including a previously unobserved plasmon mode that is highly confined between high-and low-doping regions. We further quantify the carrier density, effective mass, and dopant activation percentage by EELS and transport measurements on the bulk single crystals of BLSO. These results not only represent a practical approach for studying heterogeneities in solids and understanding structure-property relationships at the nanoscale, but also demonstrate the possibility of infrared plasmon tuning by leveraging nanoscale doping texture.
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
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
ACS Nano (e-ISSN)
ISSN
1936-0851
e-ISSN
1936-086X
Volume of the periodical
16
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
1-11
UT code for WoS article
000879868100001
EID of the result in the Scopus database
2-s2.0-85141761284