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Engineered chirality of one-dimensional nanowires | JoVE Visualize

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Engineered chirality of one-dimensional nanowires

Megan Briggeman^1,2, Elliott Mansfield³, Johannes Kombe³

¹Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA.

Science Advances|June 13, 2025

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Summary

Chirality in biological molecules is key. Researchers engineered chiral electron potentials, observing enhanced electron pairing and spin-orbit interactions, opening new avenues for quantum simulation of spin-polarized transport.

Area of Science:

Condensed matter physics
Quantum chemistry
Molecular biology

Background:

Chirality is fundamental to biological molecules like DNA and proteins.
The chiral induced spin selectivity (CISS) effect links molecular chirality to electron spin polarization.
Understanding chirality's role in electron transfer is a major biological question.

Purpose of the Study:

To engineer artificial chiral electron potentials.
To investigate electron transport properties in these engineered chiral systems.
To explore potential applications in quantum simulation and spintronics.

Main Methods:

Utilizing reconfigurable nanoscale control over conductivity at the LaAlO3/SrTiO3 interface.
Creating chiral electron potentials lacking mirror symmetry.
Performing quantum transport measurements on engineered chiral nanowires.

Main Results:

Observed enhanced electron pairing persisting to high magnetic fields (18 tesla).
Detected oscillatory transmission resonances dependent on magnetic field and chemical potential.
Interpreted resonances as evidence of engineered axial spin-orbit interaction.

Conclusions:

Demonstrated the creation of 1D chiral electron waveguides.
Provided experimental evidence for chirality-enhanced electron pairing and spin-orbit coupling.
Opened opportunities for analog quantum simulation of chiral spin-polarized transport.

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Nanoelectronics

Engineered Chirality Of One-dimensional Nanowires