High-field magnetotransport studies of surface-conducting diamonds

K Xing; DL Creedon; G Akhgar; SA Yianni; JC McCallum; L Ley; DC Qi; CI Pakes

Journal article

High-field magnetotransport studies of surface-conducting diamonds

K Xing, DL Creedon, G Akhgar, SA Yianni, JC McCallum, L Ley, DC Qi, CI Pakes

Physical Review B | Published : 2022

DOI: 10.1103/PhysRevB.105.245307

Abstract

The observation of a strong and tunable spin-orbit interaction (SOI) in surface-conducting diamond opens up a new avenue for building diamond-based spintronics. Herein we provide a comprehensive method to analyze the magnetotransport behavior of surface-conducting hydrogen-terminated diamond (H-diamond) Hall bar devices and Al/Al2O3/V2O5/H-diamond metal-oxide semiconductor field-effect transistors, respectively. By adopting a significantly improved theoretical magnetotransport model, the reduced magnetoconductance can be accurately explained both within and outside the quantum diffusive regime. The model is valid for all doping strategies of surface-conducting diamond tested. From this analy..

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University of Melbourne Researchers

Daniel Creedon Author

Jeffrey McCallum Author

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Grants

Awarded by Queensland University of Technology

Funding Acknowledgements

This work was supported by the Australian Research Council under the Discovery Project (No. DP150101673). Part of this work was performed at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). D.C.Q. acknowledges the support of the Australian Research Council (Grant No. FT160100207). D.-C.Q. acknowledges continued support from the Queensland University of Technology (QUT) through the Centre for Materials Science. D.L.C. is supported by Australian Research Council Grant No. DP190102852. K.X. is supported by Australian Research Council Grant No. DP200101345.