Resonant Magnetophonon Emission by Supersonic Electrons in Ultrahigh-Mobility Two-Dimensional Systems

Author(s): Z. T. Wang, M. Hilke, N. Fong, D. G. Austing, S. A. Studenikin, K. W. West, and L. N. Pfeiffer We investigate resonant acoustic phonon scattering in the magnetoresistivity of an ultrahigh-mobility two-dimensional electron gas system subject to DC current in the temperature range 10 mK to 3.9 K. For a DC current density of $∼1.1\text{ }\text{ }\mathrm{A}/\mathrm{m}$, the induced carrier drift … [Phys. Rev. Lett. 136, 146302] Published Wed Apr 08, 2026