Quantum phase coherent tunneling in a mixed-morphology superlattice heterostructure

초록

Multilayer phase coherence is demonstrated in a mixed-morphology superlattice heterostructure, generalizing the paradigm for superlattice miniband engineering. Thirty years since the original proposal by Tsu, a superlattice has been realized with alternating amorphous (a-MoO3) and polycrystalline (pc-In2O3) layers, whose high quality exhibits quantum phase coherence across multiple periods of amorphous barriers. Cross-plane phase coherence is quantified via weak localization signatures in magnetic field under the diffusive Fermi-surface model.

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