Anisotropic Pauli spin blockade in hole quantum dots

@article{Brauns2016AnisotropicPS,
  title={Anisotropic Pauli spin blockade in hole quantum dots},
  author={Matthias Brauns and Joost Ridderbos and Ang Li and Erik P. A. M. Bakkers and Wilfred van der Wiel and Floris Arnoud Zwanenburg},
  journal={Physical Review B},
  year={2016},
  volume={94},
  pages={1-5}
}
We present measurements on gate-defined double quantum dots in Ge-Si core-shell nanowires, which we tune to a regime with visible shell filling in both dots. We observe a Pauli spin blockade and can assign the measured leakage current at low magnetic fields to spin-flip cotunneling, for which we measure a strong anisotropy related to an anisotropic g factor. At higher magnetic fields we see signatures for leakage current caused by spin-orbit coupling between (1,1) singlet and (2,0) triplet… 
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