Spin-current correlations in photoionization of chiral molecules
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866914354620792832 |
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| author | Flores, Philip Caesar M. Carlström, Stefanos Patchkovskii, Serguei Ivanov, Misha Ordonez, Andres F. Smirnova, Olga |
| author_facet | Flores, Philip Caesar M. Carlström, Stefanos Patchkovskii, Serguei Ivanov, Misha Ordonez, Andres F. Smirnova, Olga |
| contents | Chiral molecular structures enable time-odd pseudotensor that controls correlations between photoelectron spin and molecular orientation in photoionization (arXiv:2505.22433). We show that chiral structures also support time-even correlations between the photoelectron spin and its momentum. Fundamentally, these correlations can only be revealed in conditioned measurements. We argue that conditioned measurements are the sole origin of a broad class of phenomena termed chirality-induced spin selectivity (CISS), because all these phenomena require a correlated detection of the spin and another variable, e.g., electron current. We consider one-photon ionization of an isotropic ensemble of randomly oriented chiral molecules and show that the direction of the resulting photoelectron current is enantio-sensitively `locked' to the photoelectron spin even under isotropic illumination. We also identify molecular frame spin texture created by photoionization in which its flux through the energy shell is the molecular pseudoscalar that quantifies the underlying spin-current correlations. Next, we consider the effect of the photon spin on these correlations and find that chiral structure also leads to triple correlations between the photoelectron momentum, its spin and the photon spin. Our results identify two molecular pseudovectors underlying the full complexity of the multitude of spin-conditioned measurements of the photoelectron current |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_23460 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin-current correlations in photoionization of chiral molecules Flores, Philip Caesar M. Carlström, Stefanos Patchkovskii, Serguei Ivanov, Misha Ordonez, Andres F. Smirnova, Olga Quantum Physics Atomic and Molecular Clusters Atomic Physics Chemical Physics Optics Chiral molecular structures enable time-odd pseudotensor that controls correlations between photoelectron spin and molecular orientation in photoionization (arXiv:2505.22433). We show that chiral structures also support time-even correlations between the photoelectron spin and its momentum. Fundamentally, these correlations can only be revealed in conditioned measurements. We argue that conditioned measurements are the sole origin of a broad class of phenomena termed chirality-induced spin selectivity (CISS), because all these phenomena require a correlated detection of the spin and another variable, e.g., electron current. We consider one-photon ionization of an isotropic ensemble of randomly oriented chiral molecules and show that the direction of the resulting photoelectron current is enantio-sensitively `locked' to the photoelectron spin even under isotropic illumination. We also identify molecular frame spin texture created by photoionization in which its flux through the energy shell is the molecular pseudoscalar that quantifies the underlying spin-current correlations. Next, we consider the effect of the photon spin on these correlations and find that chiral structure also leads to triple correlations between the photoelectron momentum, its spin and the photon spin. Our results identify two molecular pseudovectors underlying the full complexity of the multitude of spin-conditioned measurements of the photoelectron current |
| title | Spin-current correlations in photoionization of chiral molecules |
| topic | Quantum Physics Atomic and Molecular Clusters Atomic Physics Chemical Physics Optics |
| url | https://arxiv.org/abs/2505.23460 |