Photoionizing randomly oriented chiral molecules with isotropic light yields a spin-conditioned photoelectron current locked to the spin axis, controlled by the flux of a molecular Bloch pseudovector.
Spin-Polarized Photoelectrons in the Vicinity of Spectral Features
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abstract
It has been shown by Fano (1969) https://doi.org/10.1103/PhysRev.178.131 that photoionization of a c{\ae}sium atom by a laser pulse tuned to the vicinity of a Cooper minimum generates spin-polarized electrons. Here we show that while photoionization of rare gases does not provide large spin polarization in the vicinity of the Cooper minimum, the Fano resonances yield much higher overall spin polarization ($\ge40\%$). The spin polarization increases in angle-resolved photoelectron spectra, and reaches $100\%$ when measured in coincidence with the photoion. We provide a general framework for achieving spin polarization in photoionization irrespective of the ionization regime.
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Spin-current correlations in photoionization of chiral molecules
Photoionizing randomly oriented chiral molecules with isotropic light yields a spin-conditioned photoelectron current locked to the spin axis, controlled by the flux of a molecular Bloch pseudovector.