Josephson effect as a signature of electron-hole superfluidity in bilayers of van der Waals heterostructures
Filippo Pascucci, Sara Conti, David Neilson, Jacques Tempere, Andrea Perali
DOI 10.1103/PhysRevB.106.L220503 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We investigate a Josephson junction in an electron-hole superfluid in a double-layer transition metal dichalcogenide heterostructure. The observation of a critical tunneling current is a clear signature of superfluidity. In addition, we find the BCS-BEC crossover physics in the narrow barrier region controls the critical current across the entire system. The corresponding critical velocity, which is measurable in this system, has a maximum when the excitations pass from bosonic to fermionic. Remarkably, this occurs for the density at the boundary of the BEC to BCS-BEC crossover regime determined from the condensate fraction. This provides, in a semiconductor system, an experimental way to determine the position of this boundary.
Similar papers
Josephson effect as signature of electron-hole superfluidity in bilayers of van der Waals heterostructures
similarity 0.93Filippo Pascucci et al. · 2022 · arXiv:2205.06189
Source status unknown — claims are unverified
Non-stationary longitudinal Josephson effect in electron-hole bilayers
similarity 0.91O. M. Konstantynov & S. I. Shevchenko · 2026 · arXiv:2606.16338
Source status unknown — claims are unverified
Josephson effect with superfluid fermions in the two-dimensional BCS-BEC crossover
similarity 0.91F. Pascucci & L. Salasnich
Source status unknown — claims are unverified
Josephson-effect diagnostic of competing orders in quantum critical multiband superconductors
similarity 0.90Maxim Dzero & Alex Levchenko
Source status unknown — claims are unverified
Atypical Josephson effect in hybrid superconductor-hole systems
similarity 0.90Peter D. Johannsen et al.
Source status unknown — claims are unverified
Quantitative description of Josephson-like tunneling in νT=1 quantum Hall bilayers
similarity 0.89Timo Hyart & Bernd Rosenow
Source status unknown — claims are unverified