Coherent Manipulation of a Single Magnetic Atom Using Polarized Single Electron Transport in a Double Quantum Dot

Wenxi Lai, Wen Yang

Published 2015-01-28Version 1

We consider theoretically a magnetic impurity spin driven by polarized electrons tunneling through a double quantum dot system. Spin blockade effect and spin conservation in the system make the magnetic impurity sufficiently interact with each transported electron. This effect yields the nanomagnet coherently driven by a single electron which carries information about spin change of the magnetic impurity. The present scheme may develop all electrical manipulation of manomagnets by means of single electrons, which is significant for the implementation of scalable logical gates in information processing systems.