14 citations · 15 across the 11 of their papers we have counts for
11 papers · 1 filter
DFT-based insight into finite-temperature properties of ferroelectric perovskites with lone-pair: the case of CsGeX (X=Cl, Br, I)
Ravi Kashikar, S. Lisenkov, I. Ponomareva
Ferroelectrics remain in the focus of scientific attention for decades owing to their fundamental and practical appeal. Recently, ferroelectricity has been demonstrated in semicond…
Large electrically and chemically tunable Rashba-Dresselhaus effects in Ferroelectric CsGeX (X=Cl, Br, I) perovskites
Abduljelili Popoola, Nikhilesh Maity, Ravi Kashikar +2
Rashba-Dresselhaus effects, which originate from spin-orbit coupling and allow for spin manipulations, are actively explored in materials following the pursuit of spintronics and q…
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…
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…