Mott-Hubbard crossover in two-dimensional clusters threaded by a magnetic field

Document Type

Article

Publication Date

6-1-2000

Abstract

The ground-state characteristics of mesoscopic Hubbard clusters in the high-spin region are investigated as a function of cluster dimensions, lattice geometry and electron interaction in response to an applied transverse magnetic field normal to the surface. It is shown that the critical magnetic field of the fully polarized state (in the presence of longitudinal magnetic field), which depends on the transverse field (Peierls phase), the interaction strength, the lattice geometry or the cluster size, can serve as a sensitive measure for the Mott-Hubbard crossover in 1d and 2d finite-size systems. An exact analytical calculation of the critical magnetic field for the infinite chain with next nearest-neighbor hopping is also performed and the condition for metal-insulator transition is derived.

Identifier

0033886736 (Scopus)

Publication Title

Physica B Condensed Matter

External Full Text Location

https://doi.org/10.1016/S0921-4526(99)01063-7

ISSN

09214526

First Page

821

Last Page

822

Volume

281-282

This document is currently not available here.

Share

COinS