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   Deterministic control of ferroelectric polarization by ultrafast laser pulses; Iñiguez, Jorge  ; et alin Nature Communications (2022), 13 Detailed reference viewed: 88 (0 UL) First-principles screening of ABO(3) oxides with two magnetic sublattices; ; Iñiguez, Jorge in PHYSICAL REVIEW MATERIALS (2019), 3(6), Detailed reference viewed: 171 (1 UL)Ferroelectricity with Asymmetric Hysteresis in Metallic LiOsO3 Ultrathin Films; ; et al in PHYSICAL REVIEW LETTERS (2019), 122(22), Detailed reference viewed: 143 (1 UL)Photoinduced Phase Transitions in Ferroelectrics; Torun, Engin ; Wirtz, Ludger et alin PHYSICAL REVIEW LETTERS (2019), 123(8), 087601-6 Ferroic materials naturally exhibit a rich number of functionalities, which often arise from thermally, chemically, or mechanically induced symmetry breakings or phase transitions. Based on density ... [more ▼] Ferroic materials naturally exhibit a rich number of functionalities, which often arise from thermally, chemically, or mechanically induced symmetry breakings or phase transitions. Based on density functional calculations, we demonstrate here that light can drive phase transitions as well in ferroelectric materials such as the perovskite oxides lead titanate and barium titanate. Phonon analysis and total energy calculations reveal that the polarization tends to vanish under illumination, to favor the emergence of nonpolar phases, potentially antiferroelectric, and exhibiting a tilt of the oxygen octahedra. Strategies to tailor photoinduced phases based on phonon instabilities in the electronic ground state are also discussed. [less ▲] Detailed reference viewed: 227 (13 UL) |
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