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Hexcitons and oxcitons in monolayer WSe
Dinh Van Tuan, Su-Fei Shi, Xiaodong Xu +2
In the archetypal monolayer semiconductor WSe, the distinct ordering of spin-polarized valleys (low-energy pockets) in the conduction band allows for studies of not only simple…
Electronic Structure, Surface Doping, and Optical Response in Epitaxial WSe2 Thin Films
Yi Zhang, Miguel M. Ugeda, Chenhao Jin +15
High quality WSe2 films have been grown on bilayer graphene (BLG) with layer-by-layer control of thickness using molecular beam epitaxy (MBE). The combination of angle-resolved pho…
Transient absorption and photocurrent microscopy show hot electron supercollisions describe the rate-limiting relaxation step in graphene
Matt W. Graham, Su-Fei Shi, Zenghui Wang +3
Using transient absorption (TA) microscopy as a hot electron thermometer we show disorder-assisted acoustic-phonon supercollisions (SCs) best describes the rate-limiting relaxation…