Fig. 4: Origin of the beating pattern.
From: Coherent spin dynamics between electron and nucleus within a single atom
a Zoom-in on the relevant avoided level crossings of Fig. 2a. The Bloch spheres illustrate the dominating dynamics arising from the superpositions of the corresponding states. b Fit to a line trace from the pump-probe data from Fig. 3a showing a beating pattern (G = 17.7 pS). The pattern arises from two dominating frequencies and their sum frequency. c Fit to a line trace from the pump-probe data from Fig. 3a showing a single frequency oscillation (G = 21.5 pS). d Reduced density matrix of the initial state \(| \!\! \downarrow,-5/2\rangle\) at 20.5 mT tip field. e Reduced density matrix of the initial state \(| \!\! \downarrow,-5/2\rangle\) at 23.7 mT tip field.
