Matches in SemOpenAlex for { <https://semopenalex.org/work/W1985332485> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W1985332485 endingPage "88" @default.
- W1985332485 startingPage "83" @default.
- W1985332485 abstract "Two-band models (one wide band and one narrow band close to the Fermi energy) and local-pair models (periodic Anderson model) of high-Tc superconductors give rise to the same equilibrium thermodynamics despite the different physical pictures underlying the models. The low-energy excitations in these models are, however, not of the same character, which leads to a qualitative difference in their non-equilibrium properties. In particular, this is true for the interband optical absorption at threshold. Using the Golden rule for absorption and a mean-field treatment of the superconducting state, we calculate the threshold absorption at zero temperature for three different cases: a two-band model without additional correlation besides the interband interaction between Cooper pairs; a two-band model with attractive correlation (negative-U) between electrons on the same site in the narrow band; and a local-pair model with the same correlation as in the previous model, but with a pair interaction due to the hybridization (in second order) of the wide band and the local states. In the two latter models (which are closely related), we assume that the local-pair correlation energy is much higher than Tc. In the uncorrelated case the absorption has a square-root singularity at threshold, which is due to the diverging density of states of the one-particle excitations. In the negative-U correlated cases no single-particle transitions are possible at threshold, and only direct two-photon two-particle processes are possible. Further, in the local-pair model the hybridization can act together with a photon, giving an additional one-photon two-electron threshold in the absorption." @default.
- W1985332485 created "2016-06-24" @default.
- W1985332485 creator A5001921879 @default.
- W1985332485 creator A5031508486 @default.
- W1985332485 creator A5052792710 @default.
- W1985332485 creator A5076441479 @default.
- W1985332485 date "1992-01-01" @default.
- W1985332485 modified "2023-09-23" @default.
- W1985332485 title "Infrared threshold absorption in strongly correlated two-band superconductors" @default.
- W1985332485 cites W1485300768 @default.
- W1985332485 cites W1971472669 @default.
- W1985332485 cites W1983090386 @default.
- W1985332485 cites W2014437371 @default.
- W1985332485 cites W2049891421 @default.
- W1985332485 cites W2060793495 @default.
- W1985332485 cites W2064999913 @default.
- W1985332485 cites W2074029612 @default.
- W1985332485 cites W2082621931 @default.
- W1985332485 cites W2093350728 @default.
- W1985332485 cites W2094387412 @default.
- W1985332485 cites W2100714047 @default.
- W1985332485 cites W2112450672 @default.
- W1985332485 doi "https://doi.org/10.1088/0031-8949/1992/t42/016" @default.
- W1985332485 hasPublicationYear "1992" @default.
- W1985332485 type Work @default.
- W1985332485 sameAs 1985332485 @default.
- W1985332485 citedByCount "0" @default.
- W1985332485 crossrefType "journal-article" @default.
- W1985332485 hasAuthorship W1985332485A5001921879 @default.
- W1985332485 hasAuthorship W1985332485A5031508486 @default.
- W1985332485 hasAuthorship W1985332485A5052792710 @default.
- W1985332485 hasAuthorship W1985332485A5076441479 @default.
- W1985332485 hasConcept C120665830 @default.
- W1985332485 hasConcept C121332964 @default.
- W1985332485 hasConcept C125287762 @default.
- W1985332485 hasConcept C134306372 @default.
- W1985332485 hasConcept C147120987 @default.
- W1985332485 hasConcept C159317903 @default.
- W1985332485 hasConcept C16171025 @default.
- W1985332485 hasConcept C26873012 @default.
- W1985332485 hasConcept C33923547 @default.
- W1985332485 hasConcept C53964469 @default.
- W1985332485 hasConcept C54101563 @default.
- W1985332485 hasConcept C62520636 @default.
- W1985332485 hasConcept C94715708 @default.
- W1985332485 hasConceptScore W1985332485C120665830 @default.
- W1985332485 hasConceptScore W1985332485C121332964 @default.
- W1985332485 hasConceptScore W1985332485C125287762 @default.
- W1985332485 hasConceptScore W1985332485C134306372 @default.
- W1985332485 hasConceptScore W1985332485C147120987 @default.
- W1985332485 hasConceptScore W1985332485C159317903 @default.
- W1985332485 hasConceptScore W1985332485C16171025 @default.
- W1985332485 hasConceptScore W1985332485C26873012 @default.
- W1985332485 hasConceptScore W1985332485C33923547 @default.
- W1985332485 hasConceptScore W1985332485C53964469 @default.
- W1985332485 hasConceptScore W1985332485C54101563 @default.
- W1985332485 hasConceptScore W1985332485C62520636 @default.
- W1985332485 hasConceptScore W1985332485C94715708 @default.
- W1985332485 hasLocation W19853324851 @default.
- W1985332485 hasOpenAccess W1985332485 @default.
- W1985332485 hasPrimaryLocation W19853324851 @default.
- W1985332485 hasRelatedWork W1249302880 @default.
- W1985332485 hasRelatedWork W1984040817 @default.
- W1985332485 hasRelatedWork W1999241044 @default.
- W1985332485 hasRelatedWork W2064826439 @default.
- W1985332485 hasRelatedWork W2166309470 @default.
- W1985332485 hasRelatedWork W2171380726 @default.
- W1985332485 hasRelatedWork W2356504642 @default.
- W1985332485 hasRelatedWork W3188659342 @default.
- W1985332485 hasRelatedWork W3207343669 @default.
- W1985332485 hasRelatedWork W780631063 @default.
- W1985332485 hasVolume "T42" @default.
- W1985332485 isParatext "false" @default.
- W1985332485 isRetracted "false" @default.
- W1985332485 magId "1985332485" @default.
- W1985332485 workType "article" @default.