Beyond the Generalized Kadanoff-Baym Ansatz
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00521815" target="_blank" >RIV/68378271:_____/19:00521815 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/19:10401663
Result on the web
<a href="https://doi.org/10.1002/pssb.201800594" target="_blank" >https://doi.org/10.1002/pssb.201800594</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pssb.201800594" target="_blank" >10.1002/pssb.201800594</a>
Alternative languages
Result language
angličtina
Original language name
Beyond the Generalized Kadanoff-Baym Ansatz
Original language description
The study of electron transport is easier if the Kadanoff–Baym equations(KBE) are simplified using the Generalized Kadanoff–Baym Ansatz (GKBA).For molecular bridges, GKBA is known to safely work for weakand flat tunneling functions. It fails, if either of the conditions is not satisfied.The case in point is a molecular bridge formed by an Anderson type local center treated in the mean field and linked by tunneling junctions to two ferromagnetic electrodes whose tunneling functions simulate nickel with complex sd structure. Transient magnetic currents under a constant galvanic bias between electrodes are invoked by sudden switching on of both junctions. We establish quantitative criteria for the validity of the Ansatz, to develop a practically tractable correction to the Ansatz working beyond its validity range. The corrections to the Ansatz are obtained as a stationary approximation to the vertex part of the exact reconstruction equations whose free term is the standard GKBA.
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
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physica Status Solidi B-Basic Solid State Physics
ISSN
0370-1972
e-ISSN
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Volume of the periodical
256
Issue of the periodical within the volume
7
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
1-8
UT code for WoS article
000477754800013
EID of the result in the Scopus database
2-s2.0-85062358057