FIP Seminar: Chambers Scholar presentation
Wednesday, March 22, 2017
12:00 pm - 1:00 pm
Hudson Hall 125
Jiani Huang, Chambers Scholar (2015)
Jiani Huang (Chambers Scholar) is a Physics Ph.D. student working in the group of Prof. Maiken Mikkelsen. She received her B.S. degree in Physics from the Southeast University in China in 2012. In her research, Jiani is utilizing ultrafast optical techniques to understand and control light-matter interactions at the nanoscale and in quantum-confined systems, leading the way to exploit quantum effects in future devices. In particular, her research is focused on monolayer transition metal dichalcogenides (TMDCs) which is a new class of two-dimensional materials that can be exfoliated in a similar manner to graphene. However, these materials possess direct bandgaps in the visible wavelength range making them ideal candidates for future optoelectronic and nanophotonic applications. Previous polarization-resolved photoluminescence experiments show that the spin-state in TMDCs can be inferred from the polarization of the emitted light; however, such measurement can only provide information about the spin-state at the time of recombination and much less is known about the spin lifetime and coherence time. In this regard, Jiani's research effort includes a more versatile measurement of the spin-state using pump-probe time-resolved magneto-optical Kerr rotation spectroscopy, which enables the spin-state to be measured at any time given by the pump-probe delay and is not limited to the time of recombination.