I am theorist. I am looking for a reliable experimental method to probe charge movement or oscillations within small molecular systems e.g. between adenine - thymine (within a base pair) or between two base pairs separated by a typical distance of 0.34 nm?
See e.g.
J. Phys.: Condens. Matter 28 (2016) 495101 (19pp)
Ann. Phys. (Berlin) 526 (2014) 249–258