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aluminum scandium nitride 1molecular beam epitaxy 1nonlinear optics 1photonic devices 1second-order nonlinearity 1

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20242026
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physics.app-ph2025

Epitaxial high-K AlBN barrier GaN HEMTs

Chandrashekhar Savant, Thai-Son Nguyen, Kazuki Nomoto +8

We report a polarization-induced 2D electron gas (2DEG) at an epitaxial AlBN/GaN heterojunction grown on a SiC substrate. Using this 2DEG in a long conducting channel, we realize u…