Chiral cavity induced spin selectivity
arXiv:2209.12170 · doi:10.1021/acs.jpclett.2c03735
Abstract
Chiral-induced spin selectivity (CISS) is a phenomenon in which electron spins are polarized as they are transported through chiral molecules, and the spin polarization depends on the handedness of the chiral molecule. In this study, we show that spin selectivity can be realized in achiral materials by coupling electrons to a single mode of a chiral optical cavity. By investigating spin-dependent electron transport using the nonequilibrium Green's function approach, the spin polarization in a two-terminal setup is demonstrated to approach unity if the rate of dephasing is sufficiently small and the average chemical potential of the two leads is within an appropriate range of values, which is narrow because of the high frequency of the cavity mode. To obtain a wider range of energies for a large spin polarization, we propose to combine the CISS in chiral molecules with the light-matter interactions. For demonstration, the spin polarization of electrons transported through a helical molecule strongly coupled to a chiral cavity mode is evaluated.
6 pages, 3 figures
References in corpus (15)
- Chiral Quantum Optics
- Photovoltaic Hall effect in graphene
- Chiral nanophotonic waveguide interface based on spin-orbit coupling of light
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- Cavity Quantum Materials
- Molecular polaritonics: Chemical Dynamics under strong Light-Matter Coupling
- Chirality Induced Spin Selectivity -- The Role of Electron Correlations
- Continuum model for chiral induced spin selectivity in helical molecules
- The Ferroelectric Photo-Groundstate of SrTiO: Cavity Materials Engineering
- Spin-Dependent Electron Transport through Bacterial Cell Surface Multiheme Electron Conduits
- A proof of the Kramers degeneracy of transmission eigenvalues from antisymmetry of the scattering matrix
- Spin selectivity through time-reversal symmetric helical junctions
- Superreaction: the collective enhancement of a reaction rate by molecular polaritons in the presence of energy fluctuations
- Spin-current induced mechanical torque in a chiral molecular junction
- Bose enhancement of excitation-energy transfer with molecular-exciton-polariton condensates