Published May 21, 2019
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Double layer two-dimensional electron systems: Probing the transition from weak to strong coupling with Coulomb drag
Abstract
Frictional drag measurements revealing anomalously large dissipation at the transition between the weakly- and strongly-coupled regimes of a bilayer two-dimensional electron system at total Landau level filling factor ν_T = 1 are reported. This result suggests the existence of fluctuations, either static or dynamic, near the phase boundary separating the quantized Hall state at small layer separations from the compressible state at larger separations. Interestingly, the anomalies in drag seem to persist to larger layer separations than does interlayer phase coherence as detected in tunneling.
Additional Information
We thank Ady Stern, Bertrand Halperin and Steven Girvin for enlightening discussions and Ian Spielman for help with sample fabrication. This work was supported by the NSF under Grant No. DMR-0070890 and the DOE under Grant No. DE-FG03-99ER45766.Attached Files
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Additional details
- Eprint ID
- 95631
- Resolver ID
- CaltechAUTHORS:20190521-091159424
- DMR-0070890
- NSF
- DE-FG03-99ER45766
- Department of Energy (DOE)
- Created
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2019-05-21Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field