Abstract
We show that pure crossed Andreev reflection can be generated in an N/S/N device exclusively without the parasitic local Andreev reflection and elastic co tunnelling over a wide range of bias and Fermi levels. The pure non-local conductance exhibits rapid on/off switching and terahertz oscillation when the Fermi levels in the normal and the superconducting leads are varied. The transport characteristics exhibit double resonance ransport in terahertz regime.
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