A molecular quantized charge pump

Nano Lett. 2010 Oct 13;10(10):3841-5. doi: 10.1021/nl101023u.

Abstract

A novel single electron pump based on individual molecules (a single wall carbon nanotube) is discussed in terms of the hybrid superconducting-normal conducting pumping principle. A concept demonstration device has been built based on a carbon nanotube contacted by Nb-Ti leads. Charge current quantization is achieved through rf modulation of the back gate voltage. The device is able to transfer a given number of electrons per pumping cycle. Single electron pumping is achieved for pumping frequencies up to 80 MHz.

Publication types

  • Research Support, Non-U.S. Gov't