Engineered Chirality of One-Dimensional Nanowires

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Auteurs principaux:	Briggeman, Megan, Mansfield, Elliott, Kombe, Johannes, Damanet, François, Lee, Hyungwoo, Tang, Yuhe, Yu, Muqing, Biswas, Sayanwita, Li, Jianan, Huang, Mengchen, Eom, Chang-Beom, Irvin, Patrick, Daley, Andrew J., Levy, Jeremy
Format:	Preprint
Publié:	2025
Sujets:	Mesoscale and Nanoscale Physics Quantum Physics
Accès en ligne:	Acceder al recurso
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author	Briggeman, Megan Mansfield, Elliott Kombe, Johannes Damanet, François Lee, Hyungwoo Tang, Yuhe Yu, Muqing Biswas, Sayanwita Li, Jianan Huang, Mengchen Eom, Chang-Beom Irvin, Patrick Daley, Andrew J. Levy, Jeremy
author_facet	Briggeman, Megan Mansfield, Elliott Kombe, Johannes Damanet, François Lee, Hyungwoo Tang, Yuhe Yu, Muqing Biswas, Sayanwita Li, Jianan Huang, Mengchen Eom, Chang-Beom Irvin, Patrick Daley, Andrew J. Levy, Jeremy
contents	The origin and function of chirality in DNA, proteins, and other building blocks of life represent a central question in biology. Observations of spin polarization and magnetization associated with electron transport through chiral molecules, known collectively as the chiral induced spin selectivity (CISS) effect, suggest that chirality improves electron transfer by inhibiting backscattering. Meanwhile, the role of coherence in the electron transport within chiral nanowires is believed to be important but is challenging to investigate experimentally. Using reconfigurable nanoscale control over conductivity at the LaAlO$_3$/SrTiO$_3$ interface, we create chiral electron potentials that explicitly lack mirror symmetry. Quantum transport measurements on these chiral regions that constitute effective nanowires for the electrons reveal oscillatory transmission resonances as a function of both magnetic field and chemical potential. We interpret these resonances as arising from an engineered axial spin-orbit interaction within the chiral region. The ability to create 1D effective electron waveguides with this specificity and complexity creates new opportunities to test, via analog quantum simulation, theories about the relationship between chirality and spin-polarized electron transport in one-dimensional geometries.
format	Preprint
id	arxiv_https___arxiv_org_abs_2502_05671
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Engineered Chirality of One-Dimensional Nanowires Briggeman, Megan Mansfield, Elliott Kombe, Johannes Damanet, François Lee, Hyungwoo Tang, Yuhe Yu, Muqing Biswas, Sayanwita Li, Jianan Huang, Mengchen Eom, Chang-Beom Irvin, Patrick Daley, Andrew J. Levy, Jeremy Mesoscale and Nanoscale Physics Quantum Physics The origin and function of chirality in DNA, proteins, and other building blocks of life represent a central question in biology. Observations of spin polarization and magnetization associated with electron transport through chiral molecules, known collectively as the chiral induced spin selectivity (CISS) effect, suggest that chirality improves electron transfer by inhibiting backscattering. Meanwhile, the role of coherence in the electron transport within chiral nanowires is believed to be important but is challenging to investigate experimentally. Using reconfigurable nanoscale control over conductivity at the LaAlO$_3$/SrTiO$_3$ interface, we create chiral electron potentials that explicitly lack mirror symmetry. Quantum transport measurements on these chiral regions that constitute effective nanowires for the electrons reveal oscillatory transmission resonances as a function of both magnetic field and chemical potential. We interpret these resonances as arising from an engineered axial spin-orbit interaction within the chiral region. The ability to create 1D effective electron waveguides with this specificity and complexity creates new opportunities to test, via analog quantum simulation, theories about the relationship between chirality and spin-polarized electron transport in one-dimensional geometries.
title	Engineered Chirality of One-Dimensional Nanowires
topic	Mesoscale and Nanoscale Physics Quantum Physics
url	https://arxiv.org/abs/2502.05671

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