Chirality induced spin selectivity: A classical spin-off

Yun Chen, Oded Hod*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We demonstrate that angular momentum selectivity of particles traversing chiral environments is not limited to the quantum regime and can be realized in classical scenarios also. In our classical variant, the electron spin, which is central to the quantum chirality induced spin selectivity (CISS) effect, is replaced by the self-rotation of a finite-volume body. The latter is coupled to the center of mass orbital motion of the body through a helical tube via wall friction that acts as a dissipative spin-orbit coupling term. As a specific example, we study C60 molecules that are initially spinning in opposite senses and investigate the effect of various external control parameters on their spatial separation when driven through a rigid helical channel. We highlight resemblances and inherent differences between the quantum CISS effect and its classical variant and discuss the potential of the latter to formulate a new paradigm for enantio-separation.

Original languageEnglish
Article number244102
JournalJournal of Chemical Physics
Issue number24
StatePublished - 28 Jun 2023


FundersFunder number
Tel Aviv University


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