Keldysh NEGF study of helical tight-binding models finds LRH yields adiabatic-like dc current plateaus versus chemical potential while SRH does not, with decay exponent ℓ_c controlling magnitude and sign.
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Quantum charge pumping in helical systems: A comparative study of short- and long-range hopping
Keldysh NEGF study of helical tight-binding models finds LRH yields adiabatic-like dc current plateaus versus chemical potential while SRH does not, with decay exponent ℓ_c controlling magnitude and sign.