Electronic and Spin States at Edges of Finite $p$-orbital Helical Atomic Chain

Abstract

In connection to the chiral-induced spin-selectivity (CISS) effect, we theoretically analyze the electronic and spin states of edges of a finite $p$-orbital helical atomic chain with the intra-atomic spin-orbit interaction (SOI). This model can host the spin-filtering state in which two up spins propagate in one direction and two down spins propagate in the opposite direction without breaking the time-reversal symmetry. The enhancement of charge modulations concentrated at the edges due to the evanescent states is induced, although the spin density is absent because of the time-reversal symmetry (TRS). A Zeeman field at an edge of the atomic chain, which breaks the TRS, yields a finite spin polarization, whose direction depends on the chirality of the molecule. The chirality change induces a reasonable amount of the energy difference, which may provide an insight into the enantioselective adsorption of chiral molecules on the ferromagnetic surface.

8 pages, 7 figures, title modified, sec IV added

References in corpus (13)

• Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
• Kondo effect in quantum dots coupled to ferromagnetic leads
• Vibrational Origin of Exchange Splitting and Chirality Induced Spin Selectivity
• Nonequilibrium Kondo Effect in a Quantum Dot Coupled to Ferromagnetic Leads
• Spin selectivity through time-reversal symmetric helical junctions
• On the definition of chirality and enantioselective fields
• Charge and Spin Dynamics and Enantioselectivity in Chiral Molecules
• Spin-Dependent Momentum Conservation of Electron-Phonon Scattering in Chirality-Induced Spin Selectivity
• Giant chirality-induced spin-selectivity of polarons
• Chirality-Induced Spin Filtering in Pseudo Jahn-Teller Molecules
• Interface-Induced Conservation of Momentum Leads to Chiral-Induced Spin Selectivity
• Comment on: "Spin-orbit interaction and spin selectivity for tunneling electron transfer in DNA"
• Spin-filtering in a $p$-orbital helical atomic chain

Cited by in corpus (2)

• Spin-orbit interactions, time-reversal symmetry, and spin selection
• Interatomic spin-orbit interaction in a $p$-orbital helical atomic chain