Damsgaard, C. D.

Feidenhansl, R.

Hansen, J. B.

Hickey, M. C.

Holmes, S. N.

Jacobsen, C. S.

Mariager, S. O.

The interfacial, electrical, and magnetic properties of the Heusler alloy Co2MnGa grown epitaxially on GaAs(100) are presented with an emphasis on the use of this metal-semiconductor combination for a device that operates on the principles of spin-injection between the two materials. Through systematic growth optimization the stoichiometry in the bulk Co2MnGa can be controlled to better than ±2%, although the interface is disordered and limits the spin-injection efficiency in a practical spintronic device irrespective of the half-metallic nature of the bulk metal. Molecular beam epitaxial growth was monitored in situ by reflection high energy electron diffraction and the bulk composition was measured ex situ with inductively coupled plasma optical emission spectroscopy. The Co2MnGa L21 cubic structure is strained below a thickness of 20 nm on GaAs(100) but relaxed in films thicker than 20 nm. Electrical measurements on the Co2MnGa reveal general characteristics of a disordered electron system with insulating behavior for layer thicknesse

Damsgaard, Christian Danvad

Feidenhans, R.

Hansen, J.B.

Online Research Database In Technology

Interfacial, electrical, and spin-injection properties of epitaxial Co2MnGa grown on GaAs(100)

DESY

Interfacial, electrical, and spin-injection properties of epitaxial $Co_2MnGa$ grown on GaAs(100)

C. D. Damsgaard

M. C. Hickey

S. N. Holmes

R. Feidenhans'l

S. O. Mariager

C. S. Jacobsen

J. B. Hansen

Crossref

DESY Publication Database

Feidenhans'l, Robert Krarup

Mariager, Simon Oddsson

Copenhagen University Research Information System

Interfacial, electrical, and spin-injection properties of epitaxial Co<sub>2</sub>MnGa grown on GaAs(100)

http://orbit.dtu.dk/ws/files/4853360/dam.pdf

Interfacial, electrical, and spin-injection properties of epitaxial $Co_2MnGa$ grown on GaAs(100)

Abstract

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Full text

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Online Research Database In Technology

DESY

Crossref

DESY Publication Database

Copenhagen University Research Information System

Interfacial, electrical, and spin-injection properties of epitaxial Co2MnGaCo_2MnGaCo2​MnGa grown on GaAs(100)

Abstract

Similar works

Full text

Available Versions

Online Research Database In Technology

DESY

Crossref

DESY Publication Database

Copenhagen University Research Information System

Interfacial, electrical, and spin-injection properties of epitaxial $Co_2MnGa$ grown on GaAs(100)