Coherent 2D nanoscopy combines the principle of conventional 2D spectroscopy with photoemission electron microscopy (PEEM). This opens a route towards space-time-resolved spectroscopy on nanometer length-scales and femtosecond time-scales [1,2]. While 2D spectra are well suited for studying the dynamics of quantum states as well as interactions between them, PEEM allows for detection of the electrical near field of nano-structured samples with a resolution beyond the optical diffraction limit [3]. We use coherent 2D nanoscopy to study the hybrid electronic state forming at the interface between cobalt and the organometallic complex tris(8-hydroxyquinolinato)aluminium (Alq3). We observe the excitation paths at such a hybrid metal-organic interface and monitor the subsequent electron dynamics in the hybrid interface state. The lateral resolution enables us to address small ensembles of quantum systems rather than large-scale averaging. [1] M. Aeschlimann et al, Nature 446 , 301 (2007)[2] M. Aeschlimann et al, PNAS 107  (12), 5329 (2010)[3] M. Aeschlimann et al, Science 333 , 1723-1726 (2011)

Determining excitation pathways in a hybrid metal-organic interface state using coherent 2D nanoscopy

246th National Meeting (2013)

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