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Article Dans Une Revue Physical Review B Année : 2023

Spontaneous fractional Josephson current in parafermion junctions

Amulya Ratnakar
  • Fonction : Auteur
Aabir Mukhopadyay
  • Fonction : Auteur
Sumathi Rao
  • Fonction : Auteur
Sourin Das
  • Fonction : Auteur

Résumé

We study a parafermion Josephson junction comprising a pair of counterpropagating edge modes of two quantum Hall systems, proximitized by an s-wave superconductor. We show that the difference between the lengths (which can be controlled by external gates) of the two counterpropagating chiral edges at the Josephson junction, can act as a source of spontaneous phase bias. For the Laughlin filling fractions, ν=1/m, m2Z+1, this leads to an electrical control of either Majorana (m=1) or parafermion (m1) zero modes.

Dates et versions

hal-04056412 , version 1 (03-04-2023)

Identifiants

Citer

Kishore Iyer, Amulya Ratnakar, Aabir Mukhopadyay, Sumathi Rao, Sourin Das. Spontaneous fractional Josephson current in parafermion junctions. Physical Review B, 2023, 107 (12), pp.L121408. ⟨10.1103/PhysRevB.107.L121408⟩. ⟨hal-04056412⟩
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