Steady states of a driven dissipative dipolar XXZ chain

Parmee, Christopher and Cooper, N. R. (2020) Steady states of a driven dissipative dipolar XXZ chain. Journal of Physics B: Atomic and Molecular Physics, 53 (13). ISSN 0022-3700

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Abstract

We study theoretically a driven dissipative one-dimensional XXZ spin-1/2 chain with dipole coupling and a tunable strength of the Ising and XY interaction. Within a mean-field approximation, we find a rich phase diagram with uniform, spin density wave, antiferromagnetic and oscillatory phases, as well as regions of phase bistability. We study the phase diagram of small quantum systems using exact diagonalisation, and compare the results to the mean-field theory. We find that while expectation values only capture the uniform phases of the mean-field theory, fluctuations about these expectation values give signatures of spatially non-uniform phases and bistabilities. We find these signatures for all ratios of the Ising to XY interaction, showing that they appear to be general features of spin-1/2 systems.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Physics B: Atomic and Molecular Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3107
Subjects:
ID Code:
143483
Deposited By:
Deposited On:
23 Apr 2020 15:15
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2020 10:14