6 papers
Theory of ultrathin ferroelectrics: the case of CsGeBr
Ravi Kashikar, Arlies Valdespino, Charlton Ogg +3
Ferroelectricity has recently been demonstrated in germanium-based inorganic halide perovskites. We use atomistic first-principles-based simulations to study ultra-thin CsGeBr…
Ferroelectric phases and phase transitions in CsGeBr induced by mechanical load
Joshua Townsend, Ravi Kashikar, S. Lisenkov +1
First-principles-based atomistic simulations are used to reveal ferroelectric phases and phase transitions induced in a semiconductor ferroelectric, CsGeBr, by external loads:…
Giant Spin Splitting and its Origin in Methylhydrazinium Lead Halide Perovskites
Nikhilesh Maity, Ravi Kashikar, S. Lisenkov +1
Spin splitting, or removal of spin degeneracy in the electronic energy band/level is often a measure of spin-orbit coupling strength and a way to manipulate spin degrees of freedom…
Coupling of structure and magnetism to spin splitting in hybrid organic-inorganic perovskites
Ravi Kashikar, D. DeTellem, P. S. Ghosh +6
Hybrid organic-inorganic perovskites are famous for the diversity of their chemical compositions, phases and phase transitions, and associated physical properties. We use a combina…
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…