Journal article
Correlation between electronic micro-roughness and surface topography in two-dimensional surface conducting hydrogen-terminated diamond
SA Yianni, DL Creedon, AK Schenk, K Xing, G Akhgar, DI Hoxley, L Ley, JC McCallum, CI Pakes
Diamond and Related Materials | ELSEVIER SCIENCE SA | Published : 2021
Abstract
The influence of surface topography on phase coherent transport in the two-dimensional (2D) hole band of surface transfer doped hydrogen-terminated (100) diamond is investigated. Low-temperature magneto-conductance measurements were carried out with an applied in-plane magnetic field to quantify the effect of electronic micro-roughness on spin dephasing in the 2D hole band for Hall bar devices with similar transport characteristics, but significantly different topographic roughness. The electronic micro-roughness of the 2D hole band, described by the parameter d2L, where d is the root-mean-square (rms) fluctuation in the width of the quantum well and L is the correlation length of the fluctu..
View full abstractRelated Projects (2)
Grants
Awarded by Australian Research Council
Funding Acknowledgements
This work was supported by the Australian Research Council under the Discovery Project scheme (DP150101673) . DLC is supported by the Australian Research Council under Discovery Project grant DP190102852. Device fabrication was performed in part at the University of Melbourne, Bandwidth Foundary International, part of the OptoFab node of the Australian National Fabrication Facilities. Atomic force microscopy was performed in part at the Australian National Fabrication Facility (ANFF) , a company established under the National Collaborative Research Infrastructure Strategy, through the La Trobe University Centre for Materials and Surface Science.