Optical imprinting of superlattices in two-dimensional materials

10Citations
Citations of this article
26Readers
Mendeley users who have this article in their library.

Abstract

We propose an optical method of shining circularly polarized and spatially periodic laser fields to imprint superlattice structures in two-dimensional electronic systems. By changing the configuration of the optical field, we synthesize various lattice structures with different spatial symmetry, periodicity, and strength. We find that the wide optical tunability allows one to tune different properties of the effective band structure, including Chern number, energy bandwidths, and band gaps. The in situ tunability of the superlattice gives rise to unique physics ranging from the topological transitions to the creation of the flat bands through the kagome superlattice, which can allow a realization of strongly correlated phenomena in Floquet systems. We consider the high-frequency regime where the electronic system can remain in the quasiequilibrium phase for an extended amount of time. The spatiotemporal reconfigurability of the present scheme opens up possibilities to control light-matter interaction to generate novel electronic states and optoelectronic devices.

Cite

CITATION STYLE

APA

Kim, H., Dehghani, H., Aoki, H., Martin, I., & Hafezi, M. (2020). Optical imprinting of superlattices in two-dimensional materials. Physical Review Research, 2(4). https://doi.org/10.1103/PhysRevResearch.2.043004

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free