Work

Pairing of composite electrons and composite holes in νT=1 quantum Hall bilayers

Year: 2023

Type: article

Abstract: It is known that a nearly balanced quantum Hall bilayer at ${\ensuremath{\nu}}_{T}$ = 1 goes from two decoupled composite Fermi liquids to a strongly coupled exciton condensate phase as the interlayer distance is decreased. It's shown that when the bilayer is treated as one layer of composite electrons and one layer of composite holes, the fluctuations in the gauge field around the mean-field solution mediate an attractive interlayer interaction, which leads to stable BCS pairing between composite electrons and composite holes in the $s$-wave channel. This composite exciton may be the precursor to the exciton condensate phase.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.5.l042022

Authors: Luca Rüegg, Gaurav Chaudhary, Robert-Jan Slager

Institution: University of Cambridge

Language: Latvian

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: Schiff Foundation, Engineering and Physical Sciences Research Council, Trinity College, University of Cambridge