TCHOUMAKOV, Serguei; CAYSSOL, Jérôme; GRUSHIN, Adolfo G.

doi:10.1103/PhysRevB.105.075309

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TCHOUMAKOV, Serguei
Théorie de la Matière Condensée [NEEL - TMC]

CAYSSOL, Jérôme
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

GRUSHIN, Adolfo G.
Théorie de la Matière Condensée [NEEL - TMC]

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Physical Review B. 2022, vol. 105, n° 7, p. 075309

American Physical Society

Resumen en inglés

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.< Leer menos

DOI

http://dx.doi.org/10.1103/PhysRevB.105.075309

Proyecto ANR

Effets linéaires et non linéaires dans les matériaux topologiques irradiés - ANR-18-CE30-0001

Orígen

Importado de Hal

Centros de investigación

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798