Electron-phonon scattering at the intersection of two Landau levels

Abstract

We predict a double-resonant feature in the magnetic field dependence of the phonon-mediated longitudinal conductivity ${\sigma }_{xx}$ of a two-subband quasi-two-dimensional electron system in a quantizing magnetic field. The two sharp peaks in ${\sigma }_{xx}$ appear when the energy separation between two Landau levels belonging to different size-quantization subbands is favorable for acoustic-phonon transitions. One-phonon and two-phonon mechanisms of electron conductivity are calculated and mutually compared. The phonon-mediated interaction between the intersecting Landau levels is considered and no avoided crossing is found at thermal equilibrium.

arXiv comment13 pages, 8 figures

References in corpus (6)

• Two-phonon scattering of magnetorotons in fractional quantum Hall liquids
• Tuning gaps and phases of a two-subband system in a quantizing magnetic field
• A theory of phonon spectroscopy in the fractional quantum Hall regime
• Magnetothermal Conductivity of Highly Oriented Pyrolytic Graphite in the Quantum Limit
• Magnetothermal Transport of Oriented Graphite at Low Temperatures
• Two-subband system in quantizing magnetic field: Probing many-body gap by non-equilibrium phonons

Cited by in corpus (3)

• Peculiarities in the pseudogap behavior in optimally doped YBa2Cu3O7-δ single crystals under pressure up to 1GPa
• Spin-orbit terms in multi-subband electron systems: A bridge between bulk and two-dimensional Hamiltonians
• Two-phonon scattering in graphene in the quantum Hall regime