Anisotropy of spin states in PbTe nanowire quantum dots in the absence of charging energy.

We study semiconductor PbTe nanowires with quantum dots in the absence of Coulomb blockade. These materials from group IV-VI are of interest for the realization of spin-qubits, due to high g-factor, spin-orbit interaction, and the possibility to perform isotopic purification.

High dielectric constant causes a lack of charging energy and allows direct spectroscopy of orbital and spin states. This material shows a high Lande g-factors up to 45 with a high anisotropy ratio. We investigate the spin-orbit interaction and resolve SOI hybridization energies. We discuss the potential fabrication of more advanced devices.