SAMOP 2021 – wissenschaftliches Programm

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SYCU: Symposium Chirality meets ultrafast

SYCU 1: Chirality meets ultrafast

SYCU 1.3: Hauptvortrag

Dienstag, 21. September 2021, 14:45–15:00, Audimax

Hyperfine interactions in rotational chiral states — •Andrey Yachmenev — Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85 (building 49a, room 203), 22607 Hamburg

Rotational chirality is a phenomenon associated with spontaneous symmetry breaking by unidirectionally spinning molecules into so-called rotational-cluster states [1,2]. These states are characterized by strong centrifugal forces pulling the symmetry-equivalent atoms in the molecule into different directions, thus breaking permutation symmetry. Here, we consider the effects of nuclear-spin hyperfine mixing in rotationally chiral states. For the H2S molecule we demonstrated, through comprehensive variational calculations, strong ortho-para state mixing in rotational cluster states leading to the generation of spin polarization and magnetization.

[1] P. R. Bunker and P. Jensen, J. Mol. Spectrosc. 228, 640 (2004)

[2] A. Owens, A. Yachmenev, S. N. Yurchenko, J. Küpper, Phys. Rev. Lett. 121, 193201 (2018)

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