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Quantum Hall stripe phases near half-integer filling factors ν≥9/2 were predicted by Hartree-Fock (HF) theory and confirmed by discoveries of giant resistance anisotropies in high-mobility two-dimensional electron gases. A theory of such anisotropy was proposed by MacDonald and Fisher, although they used parameters whose dependencies on the filling factor, electron density, and mobility remained unspecified. Here, we fill this void by calculating the hard-to-easy resistivity ratio as a function of these three variables. Quantitative comparison with experiment yields very good agreement, which we view as evidence for the "plain vanilla" smectic stripe HF phases.
Bibliographical noteFunding Information:
We thank I. Dmitriev and M. Fogler for discussions, and G. Jones, T. Murphy, and A. Bangura for technical support. Calculations by M.S. and Y.H. were supported primarily by the NSF through the University of Minnesota MRSEC under Award No. DMR-1420013. Experiments by X.F. and M.Z. were supported by the US Department of Energy, Office of Science, Basic Energy Sciences, under Award No. ER 46640-SC0002567. Growth of GaAs/AlGaAs quantum wells at Purdue University was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-SC0006671. Growth of GaAs/AlGaAs quantum wells at Princeton University was supported by the Gordon and Betty Moore Foundation Grant No. GBMF 4420, and by the National Science Foundation MRSEC Grant No. DMR-1420541. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreements No. DMR-1157490 and No. DMR-1644779, and the State of Florida.
© 2019 American Physical Society.
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- Period 6