Imperial College London
Portrait Picture

Professor David W. McComb

Faculty of Engineering, Department of Materials

Adjunct Professor
 
 
 
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Contact

 

+44 (0)20 7594 6750d.mccomb Website

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ahmed:2017:10.1016/j.jcrysgro.2017.03.012,
author = {Ahmed, AS and Esser, BD and Rowland, J and McComb, DW and Kawakami, RK},
doi = {10.1016/j.jcrysgro.2017.03.012},
journal = {Journal of Crystal Growth},
pages = {38--46},
title = {Molecular beam epitaxy growth of [CrGe/MnGe/FeGe] superlattices: Toward artificial B20 skyrmion materials with tunable interactions},
url = {http://dx.doi.org/10.1016/j.jcrysgro.2017.03.012},
volume = {467},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Skyrmions are localized magnetic spin textures whose stability has been shown theoretically to depend on material parameters including bulk Dresselhaus spin orbit coupling (SOC), interfacial Rashba SOC, and magnetic anisotropy. Here, we establish the growth of a new class of artificial skyrmion materials, namely B20 superlattices, where these parameters could be systematically tuned. Specifically, we report the successful growth of B20 superlattices comprised of single crystal thin films of FeGe, MnGe, and CrGe on Si(1 1 1) substrates. Thin films and superlattices are grown by molecular beam epitaxy and are characterized through a combination of reflection high energy electron diffraction, X-ray diffraction, and cross-sectional scanning transmission electron microscopy (STEM). X-ray energy dispersive spectroscopy (XEDS) distinguishes layers by elemental mapping and indicates good interface quality with relatively low levels of intermixing in the [CrGe/MnGe/FeGe] superlattice. This demonstration of epitaxial, single-crystalline B20 superlattices is a significant advance toward tunable skyrmion systems for fundamental scientific studies and applications in magnetic storage and logic.
AU  - Ahmed,AS
AU  - Esser,BD
AU  - Rowland,J
AU  - McComb,DW
AU  - Kawakami,RK
DO  - 10.1016/j.jcrysgro.2017.03.012
EP  - 46
PY  - 2017///
SN  - 0022-0248
SP  - 38
TI  - Molecular beam epitaxy growth of [CrGe/MnGe/FeGe] superlattices: Toward artificial B20 skyrmion materials with tunable interactions
T2  - Journal of Crystal Growth
UR  - http://dx.doi.org/10.1016/j.jcrysgro.2017.03.012
VL  - 467
ER  -
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