Recent results on the optical properties of monolayer and few layers of semiconducting
transition metal dichalcogenides are reviewed. Experimental observations are presented …

Epitaxial growth of two-dimensional transition metal dichalcogenides on sapphire has
emerged as a promising route to wafer-scale single-crystal films. Steps on the sapphire act …

The development of information processing devices with minimum carbon emission is
crucial in this information age. One of the approaches to tackle this challenge is by using …

Valley degrees of freedom in transition metal dichalcogenides thoroughly influence electron–
phonon coupling and its nonequilibrium dynamics. We conducted a first-principles study of …

Since the discovery of semiconducting monolayer transition metal dichalcogenides, a variety
of experimental and theoretical studies have been carried out seeking to understand the …

We investigate valley dynamics associated with trions in monolayer tungsten diselenide
(WSe 2) using polarization resolved two-color pump-probe spectroscopy. When tuning the …

We study the exciton valley relaxation dynamics in single-layer MoS 2 by a combination of
two nonequilibrium optical techniques: time-resolved Faraday rotation and time-resolved …

The emerging field of valleytronics has boosted intensive interests in investigating and
controlling valley polarized light emission of monolayer transition metal dichalcogenides (1L …

In monolayers of semiconducting transition metal dichalcogenides, the light helicity (σ+ or σ-
) is locked to the valley degree of freedom, leading to the possibility of optical initialization of …

Using time-and angle-resolved photoemission, we present momentum-and energy-resolved
measurements of exciton coupling in monolayer WS 2. We observe strong intravalley …