15 citations · 24 across the 7 of their papers we have counts for
7 papers
Enhancement of exciton radius near a band-gap closing through quantum geometry
Jin-Hyung Choi, Sang-Hoon Han, Young-Kwon Han +3
Exciton engineering traditionally focuses on modifying semiclassical material properties, such as the effective mass and dielectric screening, while largely overlooking the quantum…
Color and Transparency from Quantum Geometry
Chang-geun Oh, Sun-Woo Kim
The optical properties of solids are governed not only by their energy band dispersions but also by the quantum geometry of Bloch states. While the role of energy bands in determin…
Mass-invariant universal optical conductivity from quantum geometry
Chang-geun Oh, Sun-Woo Kim, Kun Woo Kim +2
Mass is a defining property of particles, shaping their fundamental nature and interactions. In condensed matter systems, the effective mass of electrons has long been regarded as…
Stacking-Dependent Van Hove Singularity Shifts in Three-Dimensional Charge Density Waves of Kagome Metals AVSb (A = K, Rb, Cs)
Chanchal K. Barman, Sun-Woo Kim, Youngkuk Kim
Vanadium-based kagome systems AVSb (A = K, Rb, Cs) have emerged as paradigmatic examples exhibiting unconventional charge density waves (CDWs) and superconductivity linked…
Non-Fermi liquid to charge-transfer Mott insulator in flat bands of copper-doped lead apatite
Sun-Woo Kim, Kristjan Haule, Gheorghe Lucian Pascut +1
Copper-doped lead apatite, called LK-99, was initially claimed to be a room temperature superconductor driven by flat electron bands, but was later found to be a wide gap insulator…
Origin of competing charge density waves in kagome metal ScVSn
Kang Wang, Siyu Chen, Sun-Woo Kim +1
Understanding competing charge density wave (CDW) orders in the bilayer kagome metal ScVSn remains challenging. Experimentally, upon cooling, short-range order with wave ve…
On the dynamical stability of copper-doped lead apatite
Sun-Woo Kim, Kang Wang, Siyu Chen +5
The recent claim of room temperature superconductivity in a copper-doped lead apatite compound, called LK-99, has sparked remarkable interest and controversy. Subsequent experiment…