Shallow and Undoped Germanium Quantum Wells: A Playground for Spin and Hybrid Quantum Technology
Shallow and Undoped Germanium Quantum Wells: A Playground for Spin and Hybrid Quantum Technology
Buried-channel semiconductor heterostructures are an archetype material platform to fabricate gated semiconductor quantum devices. Sharp confinement potential is obtained by positioning the channel near the surface, however nearby surface states degrade the electrical properties of the starting material. In this paper we demonstrate a two-dimensional hole gas of high mobility …