(2018)
Devil's staircases without particle-hole symmetry.
Physical Review B
, 97
(7)
, Article 075117. 10.1103/PhysRevB.97.075117.
Preview |
Text
PhysRevB.97.075117.pdf - Published Version Download (2MB) | Preview |
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.
| Type: | Article |
|---|---|
| Title: | Devil's staircases without particle-hole symmetry |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.97.075117 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.97.075117 |
| Language: | English |
| Additional information: | This version is the version of the record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | 1-dimensional spin chains, Fractals, Ising model, Spin lattice models, Symmetries in condensed matter |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10066024 |
Archive Staff Only
 |
View Item |
