Analysis of spin-polaron formation in hund lattices

Autor:	Yesenia Arredondo, M. Avignon, Oracio Navarro, Emmanuel Vallejo
Rok vydání:	2013
Předmět:	Physics Coupling constant Correlation function (statistical mechanics) Condensed matter physics Density matrix renormalization group Quasiparticle General Physics and Astronomy Condensed Matter::Strongly Correlated Electrons Hund's rule of maximum multiplicity Polaron Ground state Spin (physics)
Zdroj:	Journal of the Korean Physical Society. 62:1504-1507
ISSN:	1976-8524 0374-4884
DOI:	10.3938/jkps.62.1504
Popis:	We consider a one-dimensional Hund lattice model where a conducting band is coupled with localized spins s = 1/2 interacting antiferromagnetically, with coupling constant J, and investigate the ground state phase diagram as a function of both the exchange coupling J and the band filling, n. From spin structure factor measurements we found different evolving magnetic orderings in the ground state related to the particle distribution in the systems, although no charge density waves are formed, as found from density-density correlation function measurements. We study the quasiparticle formation and phase separation using the density-matrix renormalization group method, which is a highly efficient method to investigate quasi-one-dimensional strongly correlated systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82e897eee1bfd690276dffec77a80bc6 https://doi.org/10.3938/jkps.62.1504 Zobrazit plný text záznamu Full text from SpringerLink