Effective Theory of the Proximity Effect in Hole-Based Germanium Superconductor Hybrids
An effective theory, backed by full numerics, of how the superconducting proximity effect imprints pairing correlations onto the hole bands of germanium-based two-dimensional gases in semiconductor-superconductor hybrids. It derives analytical expressions for non-standard singlet and triplet pairing with non-trivial momentum dependence and for the interplay of Rashba spin-orbit and Zeeman terms, predicting f-type superconductivity, Bogoliubov Fermi surfaces, and gapless regimes under large in-plane magnetic fields.
Effective Theory of the Proximity Effect in Hole-Based Germanium Superconductor Hybrids
Hybrid superconductor-semiconductor systems have received a great deal of attention in the last few years because of their potential for quantum engineering, including novel qubits and topological de…