Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations

Maria Daghofer; Winfried Koller; Alexander Prüll; Hans Gerd Evertz; Wolfgang von der Linden

doi:10.1007/11417255_3

Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations

Maria Daghofer, Winfried Koller, Alexander Prüll, Hans Gerd Evertz, Wolfgang von der Linden

Research output: Chapter in Book/Report/Conference proceeding › Other chapter contribution › peer-review

Abstract

Effective models are derived from the ferromagnetic Kondo lattice model with classical corespins, which greatly reduce the numerical effort. Results for these models are presented. They indicate that double exchange gives the correct order of magnitude and the correct doping dependence of the Curie temperature. Furthermore, we find that the jump in the particle density previously interpreted as phase separation is rather explained by ferromagnetic polarons.

Original language	English
Title of host publication	Local-Moment Ferromagnets
Editors	Professor Markus Donath, Professor Wolfgang Nolting
Place of Publication	Heidelberg
Publisher	Springer Berlin - Heidelberg
Pages	31-45
Number of pages	15
Volume	678
ISBN (Print)	978-3-540-27286-1 978-3-540-31516-2
DOIs	https://doi.org/10.1007/11417255_3
Publication status	Published - 2005

Publication series

Name	Lecture Notes in Physics
Publisher	Springer Berlin Heidelberg

Keywords

Magnetism, Magnetic Materials, Physics and Applied Physics in Engineering

Access to Document

10.1007/11417255_3

http://link.springer.com/chapter/10.1007/11417255_3

Strongly-Correlated-Many-Body-Problems
Aichhorn, M., Pippan, P., Fulterer, A. M., Neuber, D. R., Knap, M., Evertz, H. G., Michel, F., von der Linden, W., Arrigoni, E. & Daghofer, M.
1/01/98 → …
Project: Research area

Cite this

Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations. / Daghofer, Maria; Koller, Winfried; Prüll, Alexander et al.
Local-Moment Ferromagnets. ed. / Professor Markus Donath; Professor Wolfgang Nolting. Vol. 678 Heidelberg: Springer Berlin - Heidelberg, 2005. p. 31-45 (Lecture Notes in Physics).

Research output: Chapter in Book/Report/Conference proceeding › Other chapter contribution › peer-review

@inbook{744b451839454aa7a4b958ac1c5d0abf,

title = "Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations",

abstract = "Effective models are derived from the ferromagnetic Kondo lattice model with classical corespins, which greatly reduce the numerical effort. Results for these models are presented. They indicate that double exchange gives the correct order of magnitude and the correct doping dependence of the Curie temperature. Furthermore, we find that the jump in the particle density previously interpreted as phase separation is rather explained by ferromagnetic polarons.",

keywords = "Magnetism, Magnetic Materials, Physics and Applied Physics in Engineering",

author = "Maria Daghofer and Winfried Koller and Alexander Pr{\"u}ll and Evertz, {Hans Gerd} and Linden, {Wolfgang von der}",

year = "2005",

doi = "10.1007/11417255_3",

language = "English",

isbn = "978-3-540-27286-1 978-3-540-31516-2",

volume = "678",

series = "Lecture Notes in Physics",

publisher = "Springer Berlin - Heidelberg",

pages = "31--45",

editor = "Donath, {Professor Markus} and Nolting, {Professor Wolfgang}",

booktitle = "Local-Moment Ferromagnets",

}

TY - CHAP

T1 - Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations

AU - Daghofer, Maria

AU - Koller, Winfried

AU - Prüll, Alexander

AU - Evertz, Hans Gerd

AU - Linden, Wolfgang von der

PY - 2005

Y1 - 2005

N2 - Effective models are derived from the ferromagnetic Kondo lattice model with classical corespins, which greatly reduce the numerical effort. Results for these models are presented. They indicate that double exchange gives the correct order of magnitude and the correct doping dependence of the Curie temperature. Furthermore, we find that the jump in the particle density previously interpreted as phase separation is rather explained by ferromagnetic polarons.

AB - Effective models are derived from the ferromagnetic Kondo lattice model with classical corespins, which greatly reduce the numerical effort. Results for these models are presented. They indicate that double exchange gives the correct order of magnitude and the correct doping dependence of the Curie temperature. Furthermore, we find that the jump in the particle density previously interpreted as phase separation is rather explained by ferromagnetic polarons.

KW - Magnetism, Magnetic Materials, Physics and Applied Physics in Engineering

U2 - 10.1007/11417255_3

DO - 10.1007/11417255_3

M3 - Other chapter contribution

SN - 978-3-540-27286-1 978-3-540-31516-2

VL - 678

T3 - Lecture Notes in Physics

SP - 31

EP - 45

BT - Local-Moment Ferromagnets

A2 - Donath, Professor Markus

A2 - Nolting, Professor Wolfgang

PB - Springer Berlin - Heidelberg

CY - Heidelberg

ER -

Aspects of the FM Kondo Model: From Unbiased MC Simulations to Back-of-an-Envelope Explanations

Abstract

Publication series

Keywords

Access to Document

Projects

Strongly-Correlated-Many-Body-Problems

Cite this