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Devil's staircases without particle-hole symmetry

Lan, Zhihao; Lesanovsky, Igor; Li, Weibin


Zhihao Lan

Associate Professor


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.


Lan, Z., Lesanovsky, I., & Li, W. (2018). Devil's staircases without particle-hole symmetry. Physical Review B, 97,

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
Public URL
Publisher URL


PhysRevB.97.075117.pdf (3 Mb)

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