3 papers
cond-mat.mtrl-sci2026
Ferroic Polarization from Nonpolar Phonons
Seongjoo Jung, Turan Birol
Born effective charge, a fundamental quantity in lattice dynamics and ferroelectrics, provides a quantitative measure of linear polarization response to ionic displacements. Howeve…
cond-mat.mtrl-sci2026
Triggered ferroelectricity in HfO from hybrid phonons and higher-order dynamical charges
Seongjoo Jung, Turan Birol
Ferroelectric HfO has emerged as a highly promising material for high-density nonvolatile memory and nanoscale transistor applications. However, the uncertain origin of polariz…
cond-mat.mtrl-sci2024
Octahedral Rotation Induced, Antiferroelectric-like Double Hysteresis in Strained Perovskites
Seongjoo Jung, Turan Birol
Antiferroelectrics, which host both polar and antipolar order parameters, are characterized by the double hysteresis loops which are advantageous for various applications such as h…