New possibility of the ground state of quarter-filled one-dimensional strongly correlated electronic system interacting with localized spins

Abstract

We study numerically the ground state properties of the one-dimensional quarter-filled strongly correlated electronic system interacting antiferromagnetically with localized $S=1/2$ spins. It is shown that the charge-ordered state is significantly stabilized by the introduction of relatively small coupling with the localized spins. When the coupling becomes large the spin and charge degrees of freedom behave quite independently and the ferromagnetism is realized. Moreover, the coexistence of ferromagnetism with charge order is seen under strong electronic interaction. Our results suggest that such charge order can be easily controlled by the magnetic field, which possibly give rise to the giant negative magnetoresistance, and its relation to phthalocyanine compounds is discussed.

arXiv comment5pages, 4figures

References in corpus (5)

• The Non-Abelian Density Matrix Renormalization Group Algorithm
• Phase diagram of the one-dimensional extended Hubbard model at quarter filling
• Localized spin ordering in Kondo lattice models
• The one dimensional Kondo lattice model at partial band filling
• Correlation Effects in a One-Dimensional Quarter-Filled Electron System with Repulsive Interactions

Cited by in corpus (4)

• Theoretical Aspects of Charge Ordering in Molecular Conductors
• Interplay of strongly correlated electrons and localized Ising moments in one-dimension
• Magnetic Field Effect in One-Dimensional Charge Ordering Systems
• Theory of Mechanism of $\pi$-d Interaction in Iron-Phthalocyanine