Topological phases such as polar skyrmions have been a fertile playground for ferroelectric oxide superlattices, with exotic physical phenomena negative capacitance. Herein, using phase-field simulations, we demonstrate the local control of skyrmion phase electric potential applied through top electrode. Under relatively small potential, underneath electrode can be erased and recovered reversib...

We consider non-local Integral Kernel Theories of Gravity in a homogeneous and isotropic universe background as possible scenario to drive the cosmic history. In particular, we investigate cosmological properties gravitational action containing inverse d'Alembert operator Ricci scalar proposed improve Einstein's gravity at both high low-energy regimes. dynamics physically motivated exponential ...