90 citations · 152 across the 4 of their papers we have counts for
4 papers
Electronic Origin of Non-Zone-Center Phonon Condensations: Octahedral Rotations as A Case Study
Suguru Yoshida, Hirofumi Akamatsu, Katsuro Hayashi
Unstable zone-boundary phonon modes drive atomic displacements linked to a rich array of properties. Yet, the electronic origin of the instability remains to be clearly explained.…
Ferroelectricity of Dion-Jacobson layered perovskites CsNdNbO and RbNdNbO
Sota Asaki, Hirofumi Akamatsu, George Hasegawa +5
Crystallography and dielectric properties in Dion-Jacobson layered perovskites, CsNdNbO and RbNdNbO, have been examined in dense polycrystalline samples, and polari…
A new symmetry-based framework for discovering minimum energy pathways
Jason M. Munro, Hirofumi Akamatsu, Haricharan Padmanabhan +6
Physical systems evolve from one state to another along paths of least energy barrier. Without a priori knowledge of the energy landscape, multidimensional search methods aim to fi…
Artificial two-dimensional polar metal at room temperature
Yanwei Cao, Zhen Wang, Se Young Park +16
Polar metals, commonly defined by the coexistence of polar crystal structure and metallicity, are thought to be scarce because the long-range electrostatic fields favoring the pola…