Freiburg 2024 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 23: Poster: Chirality
MO 23.7: Poster
Donnerstag, 14. März 2024, 17:00–19:00, Tent C
Electron correlation in circular dichroism and chirality-induced spin selectivity — •Raoul M. M. Ebeling1, Maurice Béringuier1, Vladimiro Mujica2, Daniel M. Reich1, and Christiane P. Koch1 — 1Freie Universität Berlin, Berlin, Germany — 2Arizona State University, Arizona, United States of America
We study two phenomena related to the interaction of chiral molecules with circularly polarized light, absorption circular dichroism (CD), and chirality-induced spin selectivity (CISS). We investigate both phenomena in chiral hydrogen and chiral helium, two model systems into which we introduce chirality via an artificial chiral potential. The chiral potential is constructed from a superposition of spherical harmonics and it can be interpreted as a way to mimic the chiral environment of a real molecule. Alternatively, our chiral hydrogen and chiral helium models could even be experimentally realized by placing the atoms in a setup involving several electric fields. Quantifying the chirality of the potential with a suitable measure, we find that it can be tuned via the coefficients in the spherical harmonics expansion. We investigate the influence of the strength of the chiral potential, the strength of the spin-orbit coupling, and the strength of the electron-electron interaction on both CD and CISS.
Keywords: circular dichroism; chirality-induced spin selectivity; chirality; light-matter interaction