SKM 2021 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 24: Poster Session: Transport

TT 24.2: Poster

Donnerstag, 30. September 2021, 13:30–16:00, P

Spin-orbit interaction induces charge beatings in a lightwave-STM – single molecule junction — •Moritz Frankerl and Andrea Donarini — Institute for Theoretical Physics, University of Regensburg, 93049 Regensburg, Germany

Experiments based on lightwave-STM have shown how to obtain both space and time resolution of single molecule vibrations on their intrinsic length and time scales [1]. We investigate theoretically the electronic dynamics of a copper-phthalocynanine in a lightwave-STM by simulating the full pump-probe cycle [2]. Beatings in the transferred charge reveal the intertwined spin and orbital dynamics, modulated by a tip induced exchange field [3]. We study the dynamics directly in the time domain within a generalized master equation approach. A deeper understanding of our numerical results is obtained via coupled Bloch like equations for the molecular spin and pseudospin [4].
[1] T. L. Cocker et al., Nature 539, 263-267 (2016)
[2] M. Frankerl et al, Phys. Rev. B 103, 085420 (2021)
[3] M. Braun et al., Phys. Rev. B 70, 195345 (2004)
[4] M. Maurer et al., Phys. Rev. Research 2, 033440 (2020)