TY - JOUR

T1 - Steady states of a driven dissipative dipolar XXZ chain

AU - Parmee, Christopher

AU - Cooper, N. R.

PY - 2020/6/5

Y1 - 2020/6/5

N2 - 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 findthat 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.

AB - 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 findthat 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.

U2 - 10.1088/1361-6455/ab8949

DO - 10.1088/1361-6455/ab8949

M3 - Journal article

VL - 53

JO - Journal of Physics B: Atomic and Molecular Physics

JF - Journal of Physics B: Atomic and Molecular Physics

SN - 0022-3700

IS - 13

M1 - 135302

ER -