Interaction-induced ferroelectricity in the rotational states of polar molecules
Interaction-induced ferroelectricity in the rotational states of polar molecules
We show that a ferro-electric quantum phase transition can be driven by the dipolar interaction of polar molecules in the presence a micro-wave field. The obtained ferro-electricity crucially depends on the harmonic confinement potential, and the resulting dipole moment persists even when the external field is turned off adiabatically. The …