232 citations · 657 across the 20 of their papers we have counts for
18 papers · 1 filter
Topological textures and emergent altermagnetic signatures in ultrathin BiFeO3
George Fratian, Maya Ramesh, Xinyan Li +23
Magnetoelectric multiferroics, materials with intrinsically coupled electric polarization and magnetic order, promise ultralow-power switching, nonvolatile memory, and energy-effic…
Low-energy domain wall racetracks with multiferroic topologies
Arundhati Ghosal, Alexander Qualls, Yousra Nahas +13
Conventional racetrack memories move information by pushing magnetic domain walls or other spin textures with spin-polarized currents, but the accompanying Joule heating inflates t…
Colossal enhancement of spin transmission through magnon confinement in an antiferromagnet
Sajid Husain, Maya Ramesh, Xinyan Li +21
Since Felix Bloch's introduction of the concept of spin waves in 1930, magnons (the quanta of spin waves) have been extensively studied in a range of materials for spintronics, par…
Poincaré sphere engineering of dynamical ferroelectric topological solitons
Lingyuan Gao, Yijie Shen, Sergei Prokhorenko +2
Geometric representation lays the basis for understanding and flexible tuning of topological transitions in many physical systems. An example is given by the Poincaré sphere (PS) t…
Morphogenesis of Spin Cycloids in a Non-collinear Antiferromagnet
Shashank Kumar Ojha, Pratap Pal, Sergei Prokhorenko +11
Pattern formation in spin systems with continuous-rotational symmetry (CRS) provides a powerful platform to study emergent complex magnetic phases and topological defects in conden…
Quantum criticality at cryogenic melting of polar bubble lattices
W. Luo, A. Akbarzadeh, Y. Nahas +2
Quantum fluctuations (QFs) caused by zero-point phonon vibrations (ZPPVs) are known to prevent the occurrence of polar phases in bulk incipient ferroelectrics down to 0K1-3. On the…
Energy storage properties of ferroelectric nanocomposites
Zhijun Jiang, Zhenlong Zhang, Sergei Prokhorenko +3
An atomistic effective Hamiltonian technique is used to investigate the finite-temperature energy storage properties of a ferroelectric nanocomposite consisting of an array of BaTi…
Hexagonal close-packed polar-skyrmion lattice in ultrathin ferroelectric PbTiO3 films
Shuai Yuan, Zuhuang Chen, Sergei Prokhorenko +7
Polar skyrmions are topologically stable, swirling polarization textures with particle-like characteristics, which hold promise for next-generation, nanoscale logic and memory. Whi…
Motion and teleportation of polar bubbles in ultra-thin ferroelectrics
S. Prokhorenko, Y. Nahas, Q. Zhang +3
Polar bubble domains are complex topological defects akin to magnetic skyrmions that can spontaneously form in ferroelectric thin films and superlattices. They can be deterministic…
Dynamics of polar vortex crystallization
Suyash Rijal, Yousra Nahas, Sergei Prokhorenko +1
Vortex crystals are commonly observed in ultra-thin ferroelectrics. However, a clear physical picture of origin of this topological state is currently lacking. Here, we show that v…
Ferroelectric Solitons Crafted in Epitaxial Bismuth Ferrite Superlattices
V. Govinden, P. R. Tong, X. Guo +10
In ferroelectrics, complex interactions among various degrees of freedom enable the condensation of topologically protected polarization textures. Known as ferroelectric solitons,…
Stability of ferroelectric bubble domains
Vivasha Govinden, Suyash Rijal, Qi Zhang +4
Nanoscale ferroelectric topologies such as vortices, anti-vortices, bubble patterns etc. are stabilized in thin films by a delicate balance of both mechanical and electrical bounda…
Electrocaloric effects in multiferroics
Zhijun Jiang, Bin Xu, Sergey Prosandeev +4
An atomistic effective Hamiltonian is used to compute electrocaloric (EC) effects in rare-earth substituted BiFeO multiferroics. A phenomenological model is then developed to…
Berezinskii-Kosterlitz-Thouless Phase in Two-dimensional Ferroelectrics
Changsong Xu, Yousra Nahas, Sergei Prokhorenko +2
The celebrated Berezinskii-Kosterlitz-Thouless (BKT) phase transition refers to a topological transition characterized, e.g., by the dissociation of vortex-antivortex pairs in two-…
Possible Kitaev Quantum Spin Liquid State in 2D Materials with S=3/2
Changsong Xu, Junsheng Feng, Mitsuaki Kawamura +6
Quantum spin liquids (QSLs) form an extremely unusual magnetic state in which the spins are highly correlated and fluctuate coherently down to the lowest temperatures, but without…
Magnetic Skyrmion State in Janus Monolayers of Chromium Trihalides Cr(I,X)3
Changsong Xu, Junsheng Feng, Hongjun Xiang +1
Magnetic skyrmions are nano-scale spin structures that are promising for ultra-dense memory and logic devices. Recent progresses in two-dimensional magnets encourage the idea to re…
Giant electrocaloric response in the prototypical Pb(Mg,Nb)O relaxor ferroelectric from atomistic simulations
Zhijun Jiang, Y. Nahas, S. Prokhorenko +4
An atomistic effective Hamiltonian is used to investigate electrocaloric (EC) effects of Pb(MgNb)O (PMN) relaxor ferroelectrics in its ergodic regime, and sub…
Electrocaloric effects in the lead-free Ba(Zr,Ti)O relaxor ferroelectric from atomistic simulations
Zhijun Jiang, Sergei Prokhorenko, Sergey Prosandeev +5
Atomistic effective Hamiltonian simulations are used to investigate electrocaloric (EC) effects in the lead-free Ba(ZrTi)O (BZT) relaxor ferroelectric. We fin…