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Localized Spin Ordering in Kondo Lattice Models

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Date

2002

Authors

McCulloch, I P
Juozapavicius, A
Rosengren, A
Gulacsi, Miklos

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

Using a non-Abelian density matrix renormalization group method we determine the phase diagram of the Kondo lattice model in one dimension, by directly measuring the magnetization of the ground state. This allowed us to discover a second ferromagnetic phase missed in previous approaches. The phase transitions are found to be continuous. The spin-spin correlation function is studied in detail, and we determine in which regions the large and small Fermi surfaces dominate. The importance of double-exchange ordering and its competition with Kondo singlet formation is emphasized in understanding the complexity of the model.

Description

Keywords

Keywords: ferromagnetic material; acceleration; article; electric conductivity; electron transport; molecular dynamics; molecular model

Citation

URI

http://hdl.handle.net/1885/72271

Collections

ANU Research Publications

Source

Physical Review B

Type

Journal article

Book Title

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Access Statement

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DOI

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