Award Date

1-1-2000

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Physics

First Committee Member

Changfeng Chen

Number of Pages

106

Abstract

Unusual normal-state properties of strongly correlated electron materials have been discovered in recent years. They can not be explained by traditional theories. Much work has been devoted to exploring the physical insight into these properties. In the dissertation, the study of spin and charge response to magnetic frustration in the Hubbard Model is presented. Using exact diagonalization techniques, the eigenvalues and eigenvectors of a two-dimensional Hubbard model applied to a cluster with periodic boundary conditions have been obtained. Static and dynamic spin and charge correlation functions as well as one-particle excitation spectra have been calculated. The effects of magnetic frustration due to geometrical competition of different electron hopping terms are studied for various doping and short-range Coulomb interaction parameters. The calculated results are discussed in the framework of many-body physics.

Keywords

Charge; Charge Response; Frustration; Hubbard; Hubbard Model; Magnetic; Magnetic Frustration; Model; Responses; Spin

Controlled Subject

Condensed matter; Physics; Electromagnetism

File Format

pdf

File Size

2949.12 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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Rights

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