Geometry-Controlled Magnetic and Electronic Landscapes in Anisotropic van der Waals Materials
Abstract
Electronic structure in van der Waals materials is commonly engineered through composition, strain, electrostatic gating and heterostructure assembly. Here we introduce geometronics, a concept in which substrate geometry locally reorients an anisotropic crystal, transforming homogeneous external perturbation into programmable magnetic and electronic landscapes. We demonstrate this concept using a bilayer of the antiferromagnetic semiconductor CrSBr transferred onto an inverted pyramidal nanoindentation, where the local crystal orientation with respect to the external magnetic field drives the coexistence of antiferromagnetic and ferromagnetic phases within a single continuous crystal. The resulting magnetic landscape creates a switchable excitonic potential well of up to 10--12 meV, directly visualised by spatially resolved spectroscopy. More generally, geometronics provides a universal route for deterministically programmed electronic and magnetic landscapes without modifying the material itself. It therefore establishes substrate topography as a new design principle that exploits the intrinsic anisotropy of layered van der Waals materials.
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BibTeX
@misc{smiertka2026geometrycontrolled,
title = {{Geometry-Controlled Magnetic and Electronic Landscapes in Anisotropic van der Waals Materials}},
author = {Maciej Śmiertka and Ewelina Cybula and Oliwia Janikowska and Bartosz Hołyński and Gayatri and Grzegorz Krasucki and Mariusz Hasiak and Kseniia Mosina and Zdenek Sofer and Adam Babiński and Maciej R Molas and Paulina Plochocka and Michał Baranowski},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.01223},
eprint = {2609.01223},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.01223},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Geometry-Controlled Magnetic and Electronic Landscapes in Anisotropic van der Waals Materials
AU - Maciej Śmiertka
AU - Ewelina Cybula
AU - Oliwia Janikowska
AU - Bartosz Hołyński
AU - Gayatri
AU - Grzegorz Krasucki
AU - Mariusz Hasiak
AU - Kseniia Mosina
AU - Zdenek Sofer
AU - Adam Babiński
AU - Maciej R Molas
AU - Paulina Plochocka
AU - Michał Baranowski
PY - 2026
DA - 2026/09/01
PB - arXiv
DO - 10.48550/arxiv.2609.01223
UR - https://arxiv.org/abs/2609.01223
AB - Electronic structure in van der Waals materials is commonly engineered through composition, strain, electrostatic gating and heterostructure assembly. Here we introduce geometronics, a concept in which substrate geometry locally reorients an anisotropic crystal, transforming homogeneous external perturbation into programmable magnetic and electronic landscapes. We demonstrate this concept using a bilayer of the antiferromagnetic semiconductor CrSBr transferred onto an inverted pyramidal nanoindentation, where the local crystal orientation with respect to the external magnetic field drives the coexistence of antiferromagnetic and ferromagnetic phases within a single continuous crystal. The resulting magnetic landscape creates a switchable excitonic potential well of up to 10--12 meV, directly visualised by spatially resolved spectroscopy. More generally, geometronics provides a universal route for deterministically programmed electronic and magnetic landscapes without modifying the material itself. It therefore establishes substrate topography as a new design principle that exploits the intrinsic anisotropy of layered van der Waals materials.
ER -