Devil's staircases without particle-hole symmetry

Lan, Zhihao; Lesanovsky, Igor; Li, Weibin

Abstract

We present and analyze spin models with long-range interactions whose ground state features a so-called devil’s staircase and where plateaus of the staircase are accessed by varying two-body interactions. This is in contrast to the canonical devil’s staircase, for example occurring in the one-dimensional Ising model with long-range interactions, where typically a single-body chemical potential is varied to scan through the plateaus. These systems, moreover, typically feature a particle-hole symmetry which trivially connects the hole part of the staircase (filling fraction f ≥ 1/2) to its particle part (f ≤ 1/2). Such symmetry is absent in our models and hence the particle sector and the hole sector can be separately controlled, resulting in exotic hybrid staircases.

Citation

Lan, Z., Lesanovsky, I., & Li, W. (2018). Devil's staircases without particle-hole symmetry. Physical Review B, 97, https://doi.org/10.1103/PhysRevB.97.075117

• Journal Article Type: Article
• Acceptance Date: Jan 30, 2018
• Publication Date: Feb 9, 2018
• Deposit Date: Feb 1, 2018
• Publicly Available Date: Feb 9, 2018
• Journal: Physical Review B
• Print ISSN: 2469-9950
• Electronic ISSN: 2469-9969
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 97
• DOI: https://doi.org/10.1103/PhysRevB.97.075117
• Public URL: https://nottingham-repository.worktribe.com/output/911095
• Publisher URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.075117
• Contract Date: Feb 1, 2018