황정식 연구실

We use Fourier transform infrared (FTIR) spectrometers and a monochromatic type optical spectrometer to cover a broad spectral range from far infrared (FIR) through ultraviolet (UV). We investigate low-lying (or intraband) optical excitations, characteristic collective modes including pure and hybrid phonon modes, and electronic (interband) transitions of various novel quantum material systems. The quantum material systems would be Unconventional superconductors: High-temperature superconductors (copper oxides and Fe-pnictides) and heavy fermion systems Strongly Correlated electron systems: bulk d- or f- electron systems and 3d transition metal oxide superlattice systems Low-dimensional system: graphene, graphite, transition metal dichalcogenides (TMD), copper thin films etc. Photovoltaic materials: organic solar cells. We also would like to contribute other research areas of science such as astrophysics by sharing my spectroscopy technique and knowledge through close collaborations.