158 citations · 371 across the 5 of their papers we have counts for
5 papers
Ab Initio Linear Response Study of SrTiO3
Chris LaSota, Cheng-Zhang Wang, Rici Yu +1
The lattice instabilities of perovskite structure oxides are responsible for many of their interesting properties, such as temperature-dependent ferroelectric phase transitions. Fi…
Prediction of Phase Transition in CaSiO Perovskite and Implications for Lower Mantle Structure
Lars Stixrude, Ronald E. Cohen, Rici Yu +1
First principles linear response calculations are used to investigate the lattice dynamics of what is thought to be the third most abundant phase in the lower mantle, CaSiO_3 perov…
Polarization Dependence of Born Effective Charge and Dielectric Constant in KNbO
Cheng-Zhang Wang, Rici Yu, Henry Krakauer
The Born effective charge Z^{*} and dielectric tensor ε_{\infty} of KNbO_3 are found to be very sensitive to the atomic geometry, changing by as much as 27% between the paraelectri…
Pressure Dependence of Born Effective Charges, Dielectric Constant and Lattice Dynamics in SiC
Cheng-Zhang Wang, Rici Yu, Henry Krakauer
The pressure dependence of the Born effective charge, dielectric constant and zone-center LO and TO phonons have been determined for -SiC by a linear response method based on t…
First-Principles Determination of Chain-Structure Instability in KNbO
Rici Yu, Henry Krakauer
A complete mapping in the Brillouin zone of the structural instability associated with the ferroelectric phase transitions of KNbO has been obtained by first-principles calcula…