Josephson effects in one-dimensional supersolids

Kunimi, Masaya*; Nagai, Yuki; Kato, Yusuke*

Physical Review B, 84(9), p.094521_1 - 094521_9, 2011/09

https://doi.org/10.1103/PhysRevB.84.094521

We demonstrate that superflow past an obstacle is possible in a solid phase in the one-dimensional Gross-Pitaevskii equation with a finite-range two-body interaction. The phenomenon we find is analogous to the DC Josephson effect in superconductors. We show the phase diagram in the plane of the current and the interaction strength.