Bardeen's tunneling theory applied to intraorbital and interorbital hopping integrals between dopants in silicon

Phys. Rev. B 106, 115426 (2022)

This work applies Bardeen’s tunneling framework to quantify hopping integrals between silicon dopants beyond the simplest orbital picture. It clarifies how both intraorbital and interorbital couplings emerge in realistic donor systems.

Keywords: phosphorus dopants in silicon, silicon dopants

Main result: effective hopping between silicon dopants includes important orbital structure beyond a minimal one-orbital approximation. This is directly relevant for realistic donor-array Hamiltonians.

PDF: PhysRevB.106.115426.pdf

DOI: 10.1103/PhysRevB.106.115426

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