Femtosecond dynamics of correlated many-body states in C60 fullerenes

30th International Conference on Photonic, Electronic, and Atomic Collisions

Usenko, Sergey^1 ; Schüler, Michael^2 ; Azima, Armin^3,4,5 ; Jakob, Markus^1,5 ; Lazzarino, Leslie L.^3 ; Pavlyukh, Yaroslav^2,6 ; Przystawik, Andreas^1 ; Drescher, Markus^3,4,5 ; Laarmann, Tim^1,5 ; Berakdar, Jamal^2

Deutsches Elektronen-Synchrotron DESY, Hamburg

D-22607, Germany^1

Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle

D-06099, Germany^2

Department of Physics, University of Hamburg, Hamburg

D-22761, Germany^3

Center for Free-Electron Laser Science CFEL, DESY, Hamburg

D-22607, Germany^4

Hamburg Centre for Ultrafast Imaging CUI, Hamburg

D-22761, Germany^5

Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Kaiserslautern

D-67653, Germany^6

关键词: C60 fullerenes;    C60 molecules;    Decay dynamics;    Femtosecond dynamics;    First principle calculations;    Many-body state;    Time resolved two-photon photoemission;    Vibrational degrees of freedom;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/4/032022/pdf
DOI  :  10.1088/1742-6596/875/4/032022

来源: IOP

【 摘 要 】

In this joint theoretical and experimental work we investigate the population and decay dynamics of excited states of the C60molecule by time-resolved two-photon photoemission. We map out how the thermally excited vibrational degrees of freedom lead to a transient redistribution of the photo-excited states. This includes the super-atom molecular orbitals (SAMOs), which are of great interest currently. The measured lifetimes are in line with full-fledged first-principle calculations.