A molecular quantized charge pump.
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.
Siegle
Viktor
V
Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany. v.siegle@fkf.mpg.de
Liang
Chen-Wei
CW
Kaestner
Bernd
B
Schumacher
Hans Werner
HW
Jessen
Florian
F
Koelle
Dieter
D
Kleiner
Reinhold
R
Roth
Siegmar
S