Pseudospin-one particles in the time-periodic dice lattice: A new approach to transport control

TL;DR

This paper explores how time-periodic potentials in pseudospin-one Dirac-Weyl systems enable advanced control of electron tunneling, revealing phenomena like angle-independent super Klein tunneling and tunable resonances.

Contribution

It introduces a novel approach to controlling transport in pseudospin-one systems using time-periodic potentials, including analysis of super Klein tunneling and resonance modulation.

Findings

Super Klein tunneling is independent of various parameters.

Transmission can be controlled via tuning system parameters.

Resonances are modulated by adjusting the flat band location.

Abstract

The controlling of the transmission in the pseudospin-one Dirac-Weyl systems offers a rich tool to study new concepts of massive Dirac electron tunneling by means of a time-dependent potential. The time-periodic potential is one of the experimental techniques to have more control over the tunneling effect. In this paper, we study the transmission coefficient for different sidebands to obtain total transmission. We show how the super Klein tunneling under special condition is independent of the incidence angle, oscillation amplitude, frequency, and barrier width. We consider a band gap opening with different locations of the flat band and modulate the resonances by tuning free parameters in our system.