Quantum-interference effect on the spin polarization driven by protein-like single-helical molecules
Source abstract
Abstract
We report a theoretical study about the spin-dependent electron transport through a two-arm mesoscopic circuit in which two protein-like single-helical molecules connect serially with two normal metallic leads, respectively. Based on an effective-model Hamiltonian, the spin polarization is evaluated using the Landauer–Buttiker formula. Our results reveal that in comparison with the single-arm case, the spin-polarization efficiency can be enhanced in this system, by adjusting the length ratio of two molecules and the molecule–lead coupling manner. Besides, when local magnetic flux is introduced, the Aharonov–Bohm effect makes a nontrivial contribution to the spin polarization. These findings can be helpful for building the helical-molecule-based spin filters.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Quantum and electron transport phenomena · Molecular Junctions and Nanostructures · Quantum-Dot Cellular Automata
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References (35)
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