Geometric magnetism and anomalous enantio-sensitive observables in photoionization of chiral molecules.

Bibliographic Details
Title: Geometric magnetism and anomalous enantio-sensitive observables in photoionization of chiral molecules.
Authors: Ordonez, Andres F., Ayuso, David, Decleva, Piero, Smirnova, Olga
Source: Communications Physics; 9/18/2023, Vol. 6 Issue 1, p1-11, 11p
Subject Terms: MAGNETISM, GEOMETRIC quantum phases, MOLECULES, MOLECULAR recognition, PHOTOIONIZATION, HALL effect, CHIRAL recognition
Geographic Terms: SCHWABISCH Hall (Germany)
Abstract: Chiral molecules are instrumental for molecular recognition in living organisms. Distinguishing between two opposite enantiomers, the mirror twins of the same chiral molecule, is both vital and challenging. Geometric magnetism enables a broad class of phenomena in solids including the anomalous electron velocity, the Hall effect, and related topological observables. Here we show that ultrafast electron currents excited in chiral molecules can generate geometric fields which enable a class of anomalous enantio-sensitive observables in photoionization. Next, we introduce the first member of this class: enantio-sensitive orientation of chiral molecules via photoionization. This effect opens unexplored routes to both enantio-separation and imaging of chiral dynamics on ultrafast time scales. Our work suggests that geometric magnetism in photoionization provides the bridge between the two geometrical properties, chirality and topology. Detecting molecular chirality is both challenging and vital. By linking the concepts of chirality and topology, including the derivation of the Berry phase and Berry curvature in chiral molecules, the authors show that the geometrical magnetism generated by ultrafast electron currents yields an efficient set of enantiosensitive observables. [ABSTRACT FROM AUTHOR]
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Database: Complementary Index
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