Kavli Affiliate: Anton R. Akhmerov
| First 5 Authors: Isidora Araya Day, Kostas Vilkelis, Antonio L. R. Manesco, A. Mert Bozkurt, Valla Fatemi
| Summary:
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. We identify an effective
energy barrier that guarantees quantized transmission. 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.
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