Inverse photoemission in strongly correlated electron systems

Jazyk:	angličtina
Rok vydání:	1996
Předmět:	HIGH-TEMPERATURE SUPERCONDUCTORS DYNAMICS HOLE POCKETS SPIN 2-DIMENSIONAL HUBBARD-MODEL QUASI-PARTICLE DISPERSION T-J MODEL FERMI-SURFACE
Zdroj:	Physical Review. B: Condensed Matter and Materials Physics. 54(5):3576-3579
ISSN:	1550-235X 0163-1829
Popis:	Based on exact results for small clusters of t-J models, we point out the existence of several distinct channels in the inverse photoemission (IPSE) spectrum. Holelike quasiparticles can either be annihilated completely or leave behind a variable number of spin excitations, which formed the dressing cloud of the annihilated hole. In the physical parameter regime the latter processes carry the bulk of IPES weight, and, although the Fermi surface takes the form of hole pockets, the spectral function including the spin excitation bands is reminiscent of free electrons.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dris___01423::14863f8663de34c14d7c2d34c2592b7f https://research.rug.nl/en/publications/5acaccd1-a4cc-4502-83fa-d11355e6e800 Zobrazit plný text záznamu