2018/09/30 by T. O. Puel, Tharnier O. Puel, S. Chesi +5 · 8 citations
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Condensed matter physics #Ising model #Magnetic field #Magnetization #Non-equilibrium thermodynamics #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum #Quantum and electron transport phenomena #Quantum entanglement #Quantum many-body systems #Quantum mechanics #Quantum phase transition #Symmetry breaking #Thermal equilibrium #cond-mat.mes-hall #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physrevlett.122.235701
published in Physical Review Letters 122(23), 235701 (American Physical Society) · 9 pages, 7 figures
openalex publication_date 2019/06/13 · arxiv created 2019/06/28 · arxiv updated 2019/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the current-carrying steady state of a transverse field Ising chain coupled to magnetic thermal reservoirs and obtain the nonequilibrium phase diagram as a function of the magnetization potential of the reservoirs. Upon increasing the magnetization bias we observe a discontinuous jump of the magnetic order parameter that coincides with a divergence of the correlation length. For steady states with a nonvanishing conductance, the entanglement entropy at zero temperature displays a bias dependent logarithmic correction that violates the area law and differs from the well-known equilibrium case. Our findings show that out-of-equilibrium conditions allow for novel critical phenomena not possible at equilibrium.