Ferromagnetic GaAs/GaMnAs core-shell nanoWires Grown by Molecular Beam Epitaxy

Andreas Rudolph; Marcello Soda; Matthias Kiessling; Tomasz Wojtowicz; Dieter Schuh; Werner Wegscheider; Josef Zweck; Christian Back; Elisabeth Reiger

doi:10.1021/nl9020717

Ferromagnetic GaAs/GaMnAs core-shell nanoWires Grown by Molecular Beam Epitaxy

Andreas Rudolph, Marcello Soda, Matthias Kiessling, Tomasz Wojtowicz, Dieter Schuh, Werner Wegscheider, Josef Zweck, Christian Back, Elisabeth Reiger

Research output: Contribution to journal › Article › peer-review

86 Scopus citations

Abstract

GaAs/GaMnAs core-shell nanowires were grown by molecular beam epitaxy. The core GaAs nanowires were synthesized under typical nanowire growth conditions using gold as catalyst. For the GaMnAs shell the temperature was drastically reduced to achieve low-temperature growth conditions known to be crucial for high-quality GaMnAs. The GaMnAs shell grows epitaxially on the side facets of the core GaAs nanowires. A ferromagnetic transition temperature of 20 K Is obtained. Magnetic anisotropy studies indicate a magnetic easy axis parallel to the nanowire axis.

Original language	English
Pages (from-to)	3860-3866
Number of pages	7
Journal	Nano Letters
Volume	9
Issue number	11
DOIs	https://doi.org/10.1021/nl9020717
State	Published - 11 Dec 2009
Externally published	Yes

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title = "Ferromagnetic GaAs/GaMnAs core-shell nanoWires Grown by Molecular Beam Epitaxy",

abstract = "GaAs/GaMnAs core-shell nanowires were grown by molecular beam epitaxy. The core GaAs nanowires were synthesized under typical nanowire growth conditions using gold as catalyst. For the GaMnAs shell the temperature was drastically reduced to achieve low-temperature growth conditions known to be crucial for high-quality GaMnAs. The GaMnAs shell grows epitaxially on the side facets of the core GaAs nanowires. A ferromagnetic transition temperature of 20 K Is obtained. Magnetic anisotropy studies indicate a magnetic easy axis parallel to the nanowire axis.",

author = "Andreas Rudolph and Marcello Soda and Matthias Kiessling and Tomasz Wojtowicz and Dieter Schuh and Werner Wegscheider and Josef Zweck and Christian Back and Elisabeth Reiger",

year = "2009",

month = dec,

day = "11",

doi = "10.1021/nl9020717",

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T1 - Ferromagnetic GaAs/GaMnAs core-shell nanoWires Grown by Molecular Beam Epitaxy

AU - Rudolph, Andreas

AU - Soda, Marcello

AU - Kiessling, Matthias

AU - Wojtowicz, Tomasz

AU - Schuh, Dieter

AU - Wegscheider, Werner

AU - Zweck, Josef

AU - Back, Christian

AU - Reiger, Elisabeth

PY - 2009/12/11

Y1 - 2009/12/11

N2 - GaAs/GaMnAs core-shell nanowires were grown by molecular beam epitaxy. The core GaAs nanowires were synthesized under typical nanowire growth conditions using gold as catalyst. For the GaMnAs shell the temperature was drastically reduced to achieve low-temperature growth conditions known to be crucial for high-quality GaMnAs. The GaMnAs shell grows epitaxially on the side facets of the core GaAs nanowires. A ferromagnetic transition temperature of 20 K Is obtained. Magnetic anisotropy studies indicate a magnetic easy axis parallel to the nanowire axis.

AB - GaAs/GaMnAs core-shell nanowires were grown by molecular beam epitaxy. The core GaAs nanowires were synthesized under typical nanowire growth conditions using gold as catalyst. For the GaMnAs shell the temperature was drastically reduced to achieve low-temperature growth conditions known to be crucial for high-quality GaMnAs. The GaMnAs shell grows epitaxially on the side facets of the core GaAs nanowires. A ferromagnetic transition temperature of 20 K Is obtained. Magnetic anisotropy studies indicate a magnetic easy axis parallel to the nanowire axis.

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U2 - 10.1021/nl9020717

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SP - 3860

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JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

Ferromagnetic GaAs/GaMnAs core-shell nanoWires Grown by Molecular Beam Epitaxy

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