Finite wavevector scattering on the ν=23 huge longitudinal resistance

We observe the huge longitudinal resistance (HLR) anomaly at filling factor View the MathML source in a separately contacted, View the MathML source wide double quantum well structure. With drag measurements we probe the interlayer momentum transfer with one of the wells in the HLR state and observe a dependence of the drag on the filling factor ν in the drag layer. The interlayer momentum transfer peaks at View the MathML source and View the MathML source and is small for other filling factors.