Antiferromagnetic model and magnetization plateaus on the zigzag ladder with two- and three-site exchanges

Autor:	V. V. Hovhannisyan, Nerses Ananikian
Rok vydání:	2008
Předmět:	Physics Magnetization Magnetic anisotropy Condensed matter physics Zigzag Magnetic domain Heisenberg model General Physics and Astronomy Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Ising model Magnetic susceptibility
Zdroj:	Physics Letters A. 372:3363-3368
ISSN:	0375-9601
DOI:	10.1016/j.physleta.2008.02.004
Popis:	The Ising approximation is proposed for the Heisenberg model with two- and three-spin exchange interactions on a zigzag ladder placed in a strong magnetic field. Using the transfer matrix technique the magnetization is calculated and compared with the results obtained in the dynamical recursive approach. Magnetization plateaus are found at m = 0 and m = 1 3 with the two- and three-spin exchanges. The magnetic susceptibility in small and large zigzag ladders for various exchange parameters and temperatures is also analyzed. As temperature decreases the magnetic susceptibility versus magnetic field shows the formation of spin pseudogaps and transformation from double to four peak structure. Small clusters also exhibit characteristic features of large thermodynamic systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::54975d451deedd28586252e2c7c2703b https://doi.org/10.1016/j.physleta.2008.02.004 Zobrazit plný text záznamu Full Text from ScienceDirect