43 citations · 57 across the 7 of their papers we have counts for
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Coexistence of polar and antipolar phases in ferroelectric halide perovskite CsGeBr
Ravi Kashikar, S. Lisenkov, I. Ponomareva
Recently ferroelectricity has been demonstrated in the family of halide perovskites: CsGeX (X=Cl, Br, I). We develop a first-principles-based computational approach to probe fi…
First-Principles Property Assessment of Hybrid Formate Perovskites
Abduljelili Popoola, Partha Sarathi Ghosh, Maggie Kingsland +7
Hybrid organic inorganic formate perovskites, AB(HCOO), is a large family of compounds which exhibit variety of phase transitions and diverse properties. Some examples include…
Enhanced piezoelectric response at nanoscale vortex structures in ferroelectrics
Xiaowen Shi, Nimish Prashant Nazirkar, Ravi Kashikar +13
The piezoelectric response is a measure of the sensitivity of a material's polarization to stress or its strain to an applied field. Using in-operando x-ray Bragg coherent diffract…
Machine learning reveals memory of the parent phases in ferroelectric relaxors Ba(Ti,Zr)O
Adriana Ladera, Ravi Kashikar, S. Lisenkov +1
Machine learning has been establishing its potential in multiple areas of condensed matter physics and materials science. Here we develop and use an unsupervised machine learning w…
Persistent spin textures in halide perovskites induced by uniaxial stress
Ravi Kashikar, Abduljelili Popoola, Sergey Lisenkov +2
Persistent spin textures are highly desirable for applications in spintronics as they may allow for long carrier spin lifetimes. However, they are also rare as only four point grou…
Emergence of central mode in the paraelectric phase of ferroelectric perovskites
J. Weerasinghe, L. Bellaiche, T. Ostapchuk +5
THz-range dielectric spectroscopy and first-principle-based effective-Hamiltonian molecular dynamics simulations were employed to elucidate the dielectric response in the paraelect…
Domain evolution of BaTiO3 ultrathin films under electric field: a first-principles study
Bo-Kuai Lai, Inna Ponomareva, Igor A. Kornev +2
A first-principles-derived method is used to study the morphology and electric-field-induced evolution of stripe nanodomains in (001) BaTiO3 (BTO) ultrathin films, and to compare t…