Nonequilibrium phases and phase transitions of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>X</mml:mi><mml:mi>Y</mml:mi></mml:mrow></mml:math> model

We obtain the steady-state phase diagram of a transverse-field XY spin chain coupled at its ends to magnetic reservoirs held different potentials. In long-time limit, magnetization bias across system generates current-carrying nonequilibrium steady state. characterize phases as functions chain's parameters and potentials, in terms their correlation entanglement content. The mixed-order transition, previously observed for case Ising chain, is established emerge generic feature wider class out-of-equilibrium problems. critical exponents associated with this universality are determined analytically. Results also contrasted those obtained limit Markovian reservoirs. Our findings should prove helpful establishing properties transitions extended open quantum systems.