Effects of clustering and dimensionality on the magnetic properties of diluted magnetic semiconductors

R. N. Bhatt; Malcolm P. Kennett; Mona Berciu; Adel Kassaian

doi:10.1557/proc-794-t8.8

Effects of clustering and dimensionality on the magnetic properties of diluted magnetic semiconductors

R. N. Bhatt, Malcolm P. Kennett, Mona Berciu, Adel Kassaian

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

Abstract

The magnetic properties of films of diluted magnetic semiconductors (DMS) such as (Ga,Mn)As, as well as bulk grown crystals of similar materials, have been found to be extremely sensitive to growth conditions, both in terms of the ferromagnetic transition temperature, and the details of their magnetization curves. We study an impurity band model for carriers in Mn-doped DMS applicable in the low carrier density regime, and discuss the effects of clustering on the magnetic properties of DMS, using both numerical mean field and Monte Carlo simulations. In addition, we study the effects of dimensionality on the transition temperature and other magnetic behaviour, and compare our results with experimental data.

Original language	English (US)
Pages (from-to)	227-238
Number of pages	12
Journal	Materials Research Society Symposium - Proceedings
Volume	794
DOIs	https://doi.org/10.1557/proc-794-t8.8
State	Published - 2003
Event	Self-Organized Processes in Semiconductor Heteroepitaxy - Boston, MA, United States Duration: Dec 1 2003 → Dec 5 2003

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Effects of clustering and dimensionality on the magnetic properties of diluted magnetic semiconductors",

abstract = "The magnetic properties of films of diluted magnetic semiconductors (DMS) such as (Ga,Mn)As, as well as bulk grown crystals of similar materials, have been found to be extremely sensitive to growth conditions, both in terms of the ferromagnetic transition temperature, and the details of their magnetization curves. We study an impurity band model for carriers in Mn-doped DMS applicable in the low carrier density regime, and discuss the effects of clustering on the magnetic properties of DMS, using both numerical mean field and Monte Carlo simulations. In addition, we study the effects of dimensionality on the transition temperature and other magnetic behaviour, and compare our results with experimental data.",

author = "Bhatt, {R. N.} and Kennett, {Malcolm P.} and Mona Berciu and Adel Kassaian",

year = "2003",

doi = "10.1557/proc-794-t8.8",

language = "English (US)",

volume = "794",

pages = "227--238",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

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note = "Self-Organized Processes in Semiconductor Heteroepitaxy ; Conference date: 01-12-2003 Through 05-12-2003",

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TY - JOUR

T1 - Effects of clustering and dimensionality on the magnetic properties of diluted magnetic semiconductors

AU - Bhatt, R. N.

AU - Kennett, Malcolm P.

AU - Berciu, Mona

AU - Kassaian, Adel

PY - 2003

Y1 - 2003

N2 - The magnetic properties of films of diluted magnetic semiconductors (DMS) such as (Ga,Mn)As, as well as bulk grown crystals of similar materials, have been found to be extremely sensitive to growth conditions, both in terms of the ferromagnetic transition temperature, and the details of their magnetization curves. We study an impurity band model for carriers in Mn-doped DMS applicable in the low carrier density regime, and discuss the effects of clustering on the magnetic properties of DMS, using both numerical mean field and Monte Carlo simulations. In addition, we study the effects of dimensionality on the transition temperature and other magnetic behaviour, and compare our results with experimental data.

AB - The magnetic properties of films of diluted magnetic semiconductors (DMS) such as (Ga,Mn)As, as well as bulk grown crystals of similar materials, have been found to be extremely sensitive to growth conditions, both in terms of the ferromagnetic transition temperature, and the details of their magnetization curves. We study an impurity band model for carriers in Mn-doped DMS applicable in the low carrier density regime, and discuss the effects of clustering on the magnetic properties of DMS, using both numerical mean field and Monte Carlo simulations. In addition, we study the effects of dimensionality on the transition temperature and other magnetic behaviour, and compare our results with experimental data.

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U2 - 10.1557/proc-794-t8.8

DO - 10.1557/proc-794-t8.8

M3 - Conference article

AN - SCOPUS:2942722514

SN - 0272-9172

VL - 794

SP - 227

EP - 238

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Self-Organized Processes in Semiconductor Heteroepitaxy

Y2 - 1 December 2003 through 5 December 2003

ER -

Effects of clustering and dimensionality on the magnetic properties of diluted magnetic semiconductors

Abstract

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