Photoinduced metallic Volkov-Pankratov states in semi-Dirac material

Abstract

We study the emergence of interfacial modes between the two regions of a semi-Dirac type material, which are illuminated by the left and right circularly polarized light, respectively. We show that a smooth boundary between the two regions give rise to an interfacial quantum well which is sensitive to the incoming electron's momentum. The quantum well is found to host the Volkov-Pankratov states which are gapless metallic in nature. Contrary to the inverted mass term, it is the inverted velocity term that induces such states across the boundary. We also note that incident electron can fully pass over the interfacial well without any reflection only at certain light parameters-known as {\it Ramsauer-Townsend} effect. Moreover, we also observe that such modes can even exist across the interface between the irradiated and non-irradiated regions under certain condition.

This is published version

References in corpus (19)

• Photovoltaic Hall effect in graphene
• Photo-Induced Topological Phase Transition and a Single Dirac-Cone State in Silicene
• A new magnetic field dependence of Landau levels on a graphene like structure
• Theory of photoinduced Floquet Weyl semimetal phases
• Floquet topological phase transition in $\alpha$-${\mathcal{T}}_3$ lattice
• Tunable point nodes from line node semimetals via application of light
• Floquet interface states in illuminated three-dimensional topological insulators
• Photoinduced quantum spin and valley Hall effects and orbital magnetization in monolayer MoS2
• Quantum and classical Floquet prethermalization
• Floquet dynamics in two-dimensional semi-Dirac semimetals and three-dimensional Dirac semimetals
• Floquet band structure of a semi-Dirac system
• Off-resonant polarized light-controlled thermoelectric transport in ultrathin topological insulators
• Tunable thermoelectricity in monolayers of MoS${}_2$ and other group-VI dichalcogenides
• A Photoinduced Floquet Mixed-Weyl Semimetallic Phase in a Carbon Allotrope
• Quantum Hall studies of a Semi-Dirac Nanoribbon
• Topological phase transition induced by band structure modulation in a Chern insulator
• Photoinduced spin-Hall resonance in a k^3-Rashba spin-orbit coupled two dimensional hole system
• Nonlinear magnetotransport in a two-dimensional system with merging Dirac points
• Laser induced surface magnetization in Floquet-Weyl semimetals

Cited by in corpus (2)

• Probing imbalanced Weyl nodes in two-dimensional anisotropic Weyl semimetal via optical conductivity
• Volkov-Pankratov states in a driven semimetal for a generic interface