11:00 AM - 11:15 AM [18a-Z20-5] Breakdown of ion-polarization-correspondence and Born effective charges: Algebraic formulas of accurate polarization under field 〇Yukio Watanabe1 (1.Kyushu Univ.)
11:15 AM - 11:30 AM [18a-Z20-6] Permittivity for Depolarization Field of Ferroelectric and Hidden Mechanisms: Ab initio Calculations 〇Yukio Watanabe1 (1.Kyushu Univ.)