Pattern of indirect excitons in van der Waals heterostructure

TL;DR

This study investigates the spatial distribution of indirect excitons in a MoSe2/WSe2 heterostructure, revealing a quasi-periodic triangular pattern with a wavelength of approximately 2.6 micrometers, using photoluminescence techniques.

Contribution

It provides the first observation of a quasi-periodic triangular pattern of indirect excitons in van der Waals heterostructures.

Findings

Identification of a quasi-periodic triangular pattern of IXs

Characteristic wavelength of the pattern is approximately 2.6 μm

Photoluminescence reveals spatial exciton distribution

Abstract

We studied photoluminescence of spatially indirect excitons (IXs) in a MoSe$_2$/WSe$_2$ van der Waals heterostructure. We observed a quasi-periodic triangular pattern of IXs with the characteristic wavelength of the pattern $\sim$ 2.6 $\mu$m.