New publication entitled „Melting of Devil’s Staircases in the Long-Range Dicke-Ising Model“
Great News! We are happy that our article entitled „Melting of Devil’s Staircases in the Long-Range Dicke-Ising Model“ has been published in Physical Review B last week. The article is a nice collaboration from LEP members Jan Alexander Koziol, Anja Langheld, and Kai Phillip schmidt.
In the article we explore the interplay between long-range interacting matter and a linear coupling to a single bosonic (light) mode. The long-range spin interaction has a devil’s staircase ground-state phase diagram of magnetization plateaux. This staircase „melts“ into several superradiant phases under the considered light-matter coupling.
Key Highlights:
- Ground-state phase diagrams of the model on the square & triangular lattices for dipolar and van-der-Waals interactions
- Novel magnetically ordered superradiant phases
- Cooperative use of several methods: Unit-cell-based mean-field theory; Exact mapping of non-superradiant phases to pure Dicke models; Wormhole quantum Monte Carlo simulations
Reference
Melting of devil’s staircases in the long-range Dicke-Ising model
Jan Alexander Koziol, Anja Langheld, and Kai Phillip Schmidt
Phys. Rev. B 111, 224427 (2025)