Two-dimensional collective electron magnetotransport, oscillations, and chaos in a semiconductor superlattice Articles uri icon

publication date

  • diciembre 2017

issue

  • 6 (062215)

volume

  • 96

international standard serial number (ISSN)

  • 2470-0045

electronic international standard serial number (EISSN)

  • 2470-0053

abstract

  • When quantized, traces of classically chaotic single-particle systems include eigenvalue statistics and scars in eigenfuntions. Since 2001, many theoretical and experimental works have argued that classically chaotic single-electron dynamics influences and controls collective electron transport. For transport in semiconductor superlattices under tilted magnetic and electric fields, these theories rely on a reduction to a one-dimensional self-consistent drift model. A two-dimensional theory based on self-consistent Boltzmann transport does not support that single-electron chaos influences collective transport. This theory agrees with existing experimental evidence of current self-oscillations, predicts spontaneous collective chaos via a period doubling scenario, and could be tested unambiguously by measuring the electric potential inside the superlattice under a tilted magnetic field.