Room-temperature negative capacitance in a ferroelectric-dielectric superlattice heterostructure
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00451375" target="_blank" >RIV/68378271:_____/14:00451375 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/nl502691u" target="_blank" >http://dx.doi.org/10.1021/nl502691u</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/nl502691u" target="_blank" >10.1021/nl502691u</a>
Alternative languages
Result language
angličtina
Original language name
Room-temperature negative capacitance in a ferroelectric-dielectric superlattice heterostructure
Original language description
We demonstrate room-temperature negative capacitance in a ferroelectric?dielectric superlattice heterostructure. In epitaxially grown superlattice of ferroelectric BSTO (Ba0.8Sr0.2TiO3) and dielectric LAO (LaAlO3), capacitance was found to be larger compared to the constituent LAO (dielectric) capacitance. This enhancement of capacitance in a series combination of two capacitors indicates that the ferroelectric was stabilized in a state of negative capacitance. Negative capacitance was observed for superlattices grown on three different substrates (SrTiO3 (001), DyScO3 (110), and GdScO3 (110)) covering a large range of substrate strain. This demonstrates the robustness of the effect as well as potential for controlling the negative capacitance effect using epitaxial strain. Room-temperature demonstration of negative capacitance is an important step toward lowering the subthreshold swing in a transistor below the intrinsic thermodynamic limit of 60 mV/decade and thereby improving energy
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nano Letters
ISSN
1530-6984
e-ISSN
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Volume of the periodical
14
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
5814-5819
UT code for WoS article
000343016400053
EID of the result in the Scopus database
2-s2.0-84907870426