Floquet spectrum and driven conductance in Dirac materials: Effects of Landau-Zener-Stückelberg-Majorana interferometry
arXiv:1608.03517 · doi:10.1103/PhysRevB.94.195108
Abstract
Using the Landau-Zener-Stückelberg-Majorana-type (LZSM) semiclassical approach, we study both graphene and a thin film of a Weyl semimetal subjected to a strong AC electromagnetic field. The spectrum of quasi energies in the Weyl semimetal turns out to be similar to that of a graphene sheet. Earlier it has been predicted qualitatively that the transport properties of strongly-irradiated graphene oscillate as a function of the radiation intensity [S.V. Syzranov et al., Phys. Rev. B 88, 241112 (2013)]. Here we obtain rigorous quantitative results for a driven linear conductance of graphene and a thin film of a Weyl semimetal. The exact quantitative structure of oscillations exhibits two contributions. The first one is a manifestation of the Ramsauer-Townsend effect, while the second contribution is a consequence of the LZSM interference defining the spectrum of quasienergies.
15 pages, 9 figures, RevTeX
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Cited by in corpus (8)
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- Ballistic transport through irradiated graphene
- Coherent destruction of tunneling in graphene irradiated by elliptically polarized lasers
- Quantized electrochemical transport in Weyl semimetals
- Effective dynamics and quantum state engineering by periodic kicks
- Multipassage Landau-Zener tunneling oscillations in transverse/longitudinal dual dressing of atomic qubits