Three-dimensional chiral Veselago lens
Language
en
Article de revue
This item was published in
Physical Review B. 2022, vol. 105, n° 7, p. 075309
American Physical Society
English Abstract
The effect by which light focuses upon entering a medium with a negative refractive index, known as Veselago lensing, may enable optical imaging below the diffraction limit. Similarly, focusing electrons across a pn-junction ...Read more >
The effect by which light focuses upon entering a medium with a negative refractive index, known as Veselago lensing, may enable optical imaging below the diffraction limit. Similarly, focusing electrons across a pn-junction could realize a technologically promising electronic Veselago lens. However, its scope remains limited by the lack of three-dimensional platforms and its insensitivity to computational degrees of freedom, like spin or chirality. Here we propose a single-material three-dimensional electronic Veselago lens that selectively focuses electrons of a given chirality. Using the chiral anomaly of topological semimetals it is possible to create a sharp pn-junction for a single chirality, a chiral Veselago lens, and tune it with a magnetic field to an ideal lensing condition. We estimate that chiral Veselago lensing is observable in non-local transport and spectroscopy experiments.Read less <
ANR Project
Effets linéaires et non linéaires dans les matériaux topologiques irradiés - ANR-18-CE30-0001
Origin
Hal imported