| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1591280 | Solid State Communications | 2016 | 6 Pages |
•Li, Na, K, and Ca decorated BC3 sheets show strong coupling between magnetization and electric polarization.•These adsorption systems also indicate good switching effect.•A ‘magnetism cap’ on the top of metal adatoms explains the induced magnetism.
We have investigated the polarization and magnetic properties in Li, Na, K, and Ca decorated BC3 sheets under external electric field by density-functional calculations. We find that these nanostructures with only nonmagnetic atoms show strong coupling between magnetization and electric polarization. The jump of magnetic moments coupled with nonlinear change of dipole moments as a function of applied electric field indicates a good switching effect. Our analysis reveals that the coupling effect originates from the spin-dependent charge separation along the out-of-plane direction, which results in a “magnetism cap” on the top of metal adatoms. These results can be applied in the design of next generation of electronic storage devices utilizing magnetization and electric polarization.
