Spin waves and electronic interactions in La2CuO4

Autor:	Coldea, R, Hayden, SM, Aeppli, G, Perring, TG, Frost, CD, Mason, TE, Cheong, SW, Fisk, Z
Jazyk:	angličtina
Rok vydání:	2000
Předmět:	Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons Strongly Correlated Electrons (cond-mat.str-el) Condensed Matter - Superconductivity FOS: Physical sciences Condensed Matter::Strongly Correlated Electrons
Popis:	The magnetic excitations of the square-lattice spin-1/2 antiferromagnet and high-Tc parent La2CuO4 are determined using high-resolution inelastic neutron scattering. Sharp spin waves with absolute intensities in agreement with theory including quantum corrections are found throughout the Brillouin zone. The observed dispersion relation shows evidence for substantial interactions beyond the nearest-neighbor Heisenberg term, which can be understood in terms of a cyclic or ring exchange due to the strong hybridization path around the Cu4O4 square plaquettes. 5 pages revtex, 3 ps figures (fig(1) color), updated figures 2&3 and added analysis details to include referees' comments
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c26dbb3fb662dcf45578bb919c6be29a http://arxiv.org/abs/cond-mat/0006384 Zobrazit plný text záznamu