TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.18.3.098
TI  - Chiral adiabatic transmission protected by Fermi surface topology
PY  - 2025/03/18
UR  - https://scipost.org/SciPostPhys.18.3.098
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 18
IS  - 3
SP  - 098
A1  - Araya Day, Isidora
AU  - Vilkelis, Kostas
AU  - Manesco, Antonio L. R.
AU  - Mert Bozkurt, Ahmet
AU  - Fatemi, Valla
AU  - Akhmerov, Anton R.
AB  - We demonstrate that Andreev modes that propagate along a transparent Josephson junction have a perfect transmission at the point where three junctions meet. The chirality and the number of quantized transmission channels is determined by the topology of the Fermi surface and the vorticity of the superconducting phase differences at the trijunction. We explain this chiral adiabatic transmission (CAT) as a consequence of the adiabatic evolution of the scattering modes both in momentum and real space. The dispersion relation of the junction then separates the scattering trajectories by introducing inaccesible regions of phase space. We expect that CAT is observable in nonlocal conductance and thermal transport measurements. Furthermore, because it does not rely on particle-hole symmetry, CAT is also possible to observe directly in metamaterials.
ER  -

@Article{10.21468/SciPostPhys.18.3.098,
	title={{Chiral adiabatic transmission protected by Fermi surface topology}},
	author={Isidora Araya Day and Kostas Vilkelis and Antonio L. R. Manesco and Ahmet Mert Bozkurt and Valla Fatemi and Anton R. Akhmerov},
	journal={SciPost Phys.},
	volume={18},
	pages={098},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.18.3.098},
	url={https://scipost.org/10.21468/SciPostPhys.18.3.098},
}