Physical principles of the single-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>60</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>transistor effect

Starting with the physics of tunneling transport through a molecule, we describe the principles underlying electrical amplification effects of a ${\mathrm{C}}_{60}$ molecule. We discuss in detail the consequences of intramolecular electronic-level repulsion, an effect induced by compression of the molecule, which leads to an exponential variation of the current for a minute compression of the molecule. This detailed understanding underpins the ${\mathrm{C}}_{60}$ amplifier. Using a planar configuration and an independent electromechanical grid, a transistor effect results from this repulsion effect.

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