New attosecond spectroscopies for correlation-induced electron hole dynamics

In this talk I will present two of our recent ideas for new attosecond time-resolved measurements of electron hole dynamics [1,2]: \begin{itemize} \item \textit{Single-photon }laser enabled Auger decay (\textit{sp}LEAD) spectroscopy \end{itemize} and \begin{itemize} \item High-harmonic generation (HHG) spectroscopy of Auger-type transitions. \end{itemize} Unlike the well-known attosecond streaking, the proposed spectroscopies do not rely on photo- or secondary electron emission and are applicable to ultrafast electronic processes involving bound-bound transitions, such as electron correlation-driven charge migration. We simulate the new attosecond spectroscopies using both model and \textit{ab initio }methods. Specific applications include hole migration in glycine, atomic Auger and Coster-Kronig decays as well as quasi-exponential dynamics of molecular orbital breakdown in \textit{trans-}butadiene and propanal. \\[4pt] [1] B. Cooper and V. Averbukh, \textit{Phys. Rev. Lett. }\textbf{111}, 083004 (2013). \\[0pt] [2] J. Leeuwenburgh, B. Cooper, V. Averbukh, J. P. Marangos and M. Ivanov, \textit{Phys. Rev. Lett. }\textbf{111}, 123002 (2013).