Sub-unit-cell-segmented ferroelectricity in brownmillerite oxides by phonon decoupling
Jang, J, Jin, Y, Nam, YS, Park, HS, Kim, J, Kang, KT, So, Y, Choi, J, Choi, Y, Shim, J, Sriboriboon, P, Lee, DK, Go, KJ, Kim, GY, Hong, SB, Lee, JH, Lee, DS, Han, MG, Son, J, Kim, Y, Taniguchi, H, Kang, S, Lee, JS, Tian, H, Yang, CH, Zhu, Y, Cheong, SW, Choi, WS, Lee, J, Choi, SY
NATURE MATERIALS, 202505