348 citations
7 papers
Relaxation dynamics and interrupted coarsening in irrationally frustrated superconducting arrays
Gun Sang Jeon, Sung Jong Lee, Bongsoo Kim +1
Equilibrium and non-equilibrium relaxation behaviors of two-dimensional superconducting arrays are investigated via numerical simulations at low temperatures in the presence of inc…
Nonequilibrium critical relaxations of the order parameter and energy in the two-dimensional ferromagnetic Potts model
Keekwon Nam, Bongsoo Kim, Sung Jong Lee
The static and dynamic critical properties of the ferromagnetic q-state Potts models on a square lattice with q = 2 and 3 are numerically studied via the nonequilibrium relaxation…
Vortex jamming in superconductors and granular rheology
Hajime Yoshino, Tomoaki Nogawa, Bongsoo Kim
We demonstrate that a highly frustrated anisotropic Josephson junction array(JJA) on a square lattice exhibits a zero-temperature jamming transition, which shares much in common wi…
Domain wall motion in epitaxial Pb(Zr,Ti)O3 capacitors investigated by modified piezoresponse force microscopy
S. M. Yang, J. Y. Jo, D. J. Kim +5
We investigated the time-dependent domain wall motion of epitaxial PbZr0.2Ti0.8O3 capacitors 100 nm-thick using modified piezoresponse force microscopy (PFM). We obtained successiv…
Composition-dependent polarization switching behaviors of (111)-preferred polycrystalline Pb(Zr_{x}Ti_{1-x})O_{3} thin films
J. Y. Jo, S. M. Yang, H. S. Han +8
We investigated the time-dependent polarization switching behaviors of (111)-preferred polycrystalline Pb(ZrxTi1-x)O3 thin films with various Zr concentrations. We could explain al…
Domain Switching Kinetics in Disordered Ferroelectric Thin Films
J. Y. Jo, H. S. Han, J. -G. Yoon +3
We investigated domain kinetics by measuring the polarization switching behaviors of polycrystalline Pb(Zr,Ti)O films, which are widely used in ferroelectric memory devices.…