Tunneling between two systems of interacting chiral fermions

Journal Article · 12 April 2024 · Physical Review. B

DOI: https://doi.org/10.1103/physrevb.109.155415 · OSTI ID:2478768

Karki, D. B. ^[1]; Matveev, K. A. ^[1]

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1. Argonne National Laboratory (ANL), Argonne, IL (United States)

Here, we develop a theory of tunneling between two systems of spinless chiral fermions. This setup can be realized at the edge of a quantum Hall bilayer structure. We find that the differential conductance of such a device in the absence of interactions has an infinitely sharp peak as a function of applied voltage. Interaction between fermions results in broadening of the conductance peak. We focus on the regime of strong interactions, in which the shape of the peak manifests well defined features associated with the elementary excitations of the system.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 2478768
• Journal Information: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 15 Vol. 109; ISSN 2469-9950
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English