Coulomb Drag in the Extreme Quantum Limit
M.P. Lilly, J.P. Eisenstein, L.N. Pfeiffer, and K.W. West
TL;DR
This paper reports measurements of Coulomb drag in double layer 2D electron systems at high magnetic fields, revealing extremely large drag resistance and strong correlations at half-filling, challenging existing theoretical models.
Contribution
It provides experimental data on Coulomb drag in the quantum limit, showing significantly enhanced drag resistance and indicating stronger correlations than current theories predict.
Findings
Drag resistance exceeds zero magnetic field value by ~1000 times
Strong correlations observed at half-filling (nu=1/2)
Results challenge perturbative composite fermion models
Abstract
Coulomb drag resulting from interlayer electron-electron scattering in double layer 2D electron systems at high magnetic field has been measured. Within the lowest Landau level the observed drag resistance exceeds its zero magnetic value by factors of typically 1000. At half-filling of the lowest Landau level in each layer (nu = 1/2) the data suggest that our bilayer systems are much more strongly correlated than recent theoretical models based on perturbatively coupled composite fermion metals.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.