We present an analysis of electron transport through two weakly coupled precision placed phosphorus donors in silicon. In particular, we examine the (1,1) to (0,2) charge transition where we predict a new type of current blockade driven entirely by the nuclear spin dynamics. Using this nuclear spin blockade mechanism we devise a protocol to readout the state of single nuclear spins using electron transport measurements only. We extend our model to include realistic effects such as Stark shifted hyperfine interactions and multi-donor clusters. In the case of multi-donor clusters we show how nuclear spin blockade can be alleviated allowing for low magnetic field electron spin measurements.
@article{arxiv.1509.05407,
title = {The impact of nuclear spin dynamics on electron transport through donors},
author = {Samuel K. Gorman and Matthew A. Broome and William J. Baker and Michelle Y. Simmons},
journal= {arXiv preprint arXiv:1509.05407},
year = {2015}
}