Topological staggered field electric effect with bipartite magnets

Electric-field-switchable magnets: The case of BaNiF4

We show, using the antiferromagnetic ferroelectric BaNiF4 as a model system, that the “weak” magnetic order arising from a polar structural distortion in a ferroelectric magnet due to the Dzyaloshinskii-Moriya interaction can be switched by an electric field. We calculate the magnitude of the resulting magnetic order parameter in BaNiF4 using first-principles techniques, and we show that it is ...

Axial current generation from electric field: chiral electric separation effect.

We study a relativistic plasma containing charged chiral fermions in an external electric field. We show that with the presence of both vector and axial charge densities, the electric field can induce an axial current along its direction and thus cause chirality separation. We call it the chiral electric separation effect (CESE). On a very general basis, we argue that the strength of CESE is pr...

User Manual: Permanent Magnets Electric Motors

Electric field effect on superconductivity in La22xSrxCuO4

We demonstrate a method to tune the carrier concentration of a high temperature superconductor over a wide range, using an applied electric field. Thin film devices were made in an electrical double layer transistor configuration utilizing an ionic liquid. In this way, the surface carrier density in La2ÿxSrxCuO4 films can be varied between 0.01 and 0.14 carriers per Cu atom with a resulting cha...

Electric field effect on cholesterol-phospholipid complexes.

Monolayer mixtures of dihydrocholesterol and phospholipids at the air-water interface are used to model membranes containing cholesterol and phospholipids. Specific, stoichiometric interactions between cholesterol and some but not all phospholipids have been proposed to lead to the formation of condensed complexes. It is reported here that an externally applied electric field of the appropriate...