Publications (8)
Polarization-wave propagation as a biophysical mechanism of visual cognition
Hyun Myung Jang, Youngwoo Jang, Hyeon Han
Recent experimental studies indicate that visual cognition is accompanied by slowly propagating biophysical travelling waves in cortical tissue. Here we propose polarization waves…
Switchable Ferroelectric Photovoltaic Effects in Epitaxial Thin Films of h-RFeO3 having Narrow Optical Band Gaps
Hyeon Han, Donghoon Kim, Ji Hyun Lee +5
Ferroelectric photovoltaics (FPVs) have drawn much attention owing to their high stability, environmental safety, anomalously high photovoltages, coupled with reversibly switchable…
Li iontronics in single-crystalline T-Nb2O5 thin films with vertical ionic transport channels
Hyeon Han, Quentin Jacquet, Zhen Jiang +13
The niobium oxide polymorph T-Nb2O5 has been extensively investigated in its bulk form especially for applications in fast-charging batteries and electrochemical (pseudo)capacitors…
Role of two-dimensional Ising superconductivity in the non-equilibrium quasiparticle spin-to-charge conversion efficiency
Kun-Rok Jeon, Kyungjune Cho, Anirban Chakraborty +5
Non-equilibrium studies of two-dimensional (2D) superconductors (SCs) with Ising spin-orbit coupling are prerequisite for their successful application to equilibrium spin-triplet C…
Electron-Hole Separation in Ferroelectric Oxides for Efficient Photovoltaic Responses
Donghoon Kim, Hyeon Han, June Ho Lee +3
Despite their potential to exceed the theoretical Shockley-Queisser limit, ferroelectric photovoltaics (FPVs) have performed inefficiently due to their extremely low photocurrents.…
Giant shape-memory effect in twisted ferroic nanocomposites
Donghoon Kim, Minsoo Kim, Steffen Reidt +7
The shape recovery ability of shape-memory alloys vanishes below a critical size (~50nm), which prevents their practical applications at the nanoscale. In contrast, ferroic materia…