Phase separation and magnetoresistance in random-field magnetic polaron systems

Sh Dong; H. Yu; K. F. Wang; X. Y. Yao; J. M. Liu

doi:10.1016/j.commatsci.2004.12.009

Phase separation and magnetoresistance in random-field magnetic polaron systems

Sh Dong, H. Yu, K. F. Wang, X. Y. Yao, J. M. Liu^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

The phase separation and magnetoresistive effect of small magnetic polaron systems is studied in a random-field Ising model. The ferromagnetic/paramagnetic (FM/PM) phase separation phenomenon appears when a random-field is applied on a spin lattice. Based on the phase separation picture, the conductance by an electron tunneling mechanism is simulated. The resistivity and magnetoresistance are calculated and analysed. The physics of metal-insulator transition due to the intrinsically spatial inhomogeneities in magnetic polaron systems is discussed.

Original language	English
Pages (from-to)	168-174
Number of pages	7
Journal	Computational Materials Science
Volume	33
Issue number	1-3
DOIs	https://doi.org/10.1016/j.commatsci.2004.12.009
Publication status	Published - Apr 2005
Externally published	Yes
Event	Proceedings of the E-MRS 2004 Spring Meeting: Symposium H: Atomic Materials Design: Modelling and Characterization - Duration: 24 May 2004 → 28 May 2004

Keywords

Magnetic polaron tunneling
Magnetoresistive effect
Phase separation

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10.1016/j.commatsci.2004.12.009

Cite this

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title = "Phase separation and magnetoresistance in random-field magnetic polaron systems",

abstract = "The phase separation and magnetoresistive effect of small magnetic polaron systems is studied in a random-field Ising model. The ferromagnetic/paramagnetic (FM/PM) phase separation phenomenon appears when a random-field is applied on a spin lattice. Based on the phase separation picture, the conductance by an electron tunneling mechanism is simulated. The resistivity and magnetoresistance are calculated and analysed. The physics of metal-insulator transition due to the intrinsically spatial inhomogeneities in magnetic polaron systems is discussed.",

keywords = "Magnetic polaron tunneling, Magnetoresistive effect, Phase separation",

author = "Sh Dong and H. Yu and Wang, {K. F.} and Yao, {X. Y.} and Liu, {J. M.}",

year = "2005",

month = apr,

doi = "10.1016/j.commatsci.2004.12.009",

language = "English",

volume = "33",

pages = "168--174",

journal = "Computational Materials Science",

issn = "0927-0256",

number = "1-3",

note = "Proceedings of the E-MRS 2004 Spring Meeting: Symposium H: Atomic Materials Design: Modelling and Characterization ; Conference date: 24-05-2004 Through 28-05-2004",

}

TY - JOUR

T1 - Phase separation and magnetoresistance in random-field magnetic polaron systems

AU - Dong, Sh

AU - Yu, H.

AU - Wang, K. F.

AU - Yao, X. Y.

AU - Liu, J. M.

PY - 2005/4

Y1 - 2005/4

N2 - The phase separation and magnetoresistive effect of small magnetic polaron systems is studied in a random-field Ising model. The ferromagnetic/paramagnetic (FM/PM) phase separation phenomenon appears when a random-field is applied on a spin lattice. Based on the phase separation picture, the conductance by an electron tunneling mechanism is simulated. The resistivity and magnetoresistance are calculated and analysed. The physics of metal-insulator transition due to the intrinsically spatial inhomogeneities in magnetic polaron systems is discussed.

AB - The phase separation and magnetoresistive effect of small magnetic polaron systems is studied in a random-field Ising model. The ferromagnetic/paramagnetic (FM/PM) phase separation phenomenon appears when a random-field is applied on a spin lattice. Based on the phase separation picture, the conductance by an electron tunneling mechanism is simulated. The resistivity and magnetoresistance are calculated and analysed. The physics of metal-insulator transition due to the intrinsically spatial inhomogeneities in magnetic polaron systems is discussed.

KW - Magnetic polaron tunneling

KW - Magnetoresistive effect

KW - Phase separation

UR - http://www.scopus.com/inward/record.url?scp=14644414257&partnerID=8YFLogxK

U2 - 10.1016/j.commatsci.2004.12.009

DO - 10.1016/j.commatsci.2004.12.009

M3 - Conference article

AN - SCOPUS:14644414257

SN - 0927-0256

VL - 33

SP - 168

EP - 174

JO - Computational Materials Science

JF - Computational Materials Science

IS - 1-3

T2 - Proceedings of the E-MRS 2004 Spring Meeting: Symposium H: Atomic Materials Design: Modelling and Characterization

Y2 - 24 May 2004 through 28 May 2004

ER -

Phase separation and magnetoresistance in random-field magnetic polaron systems

Abstract

Keywords

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