TY - JOUR
T1 - Energy repartition in the nonequilibrium steady state
AU - Yan, Peng
AU - Bauer, Gerrit E.W.
AU - Zhang, Huaiwu
PY - 2017/1/17
Y1 - 2017/1/17
N2 - The concept of temperature in nonequilibrium thermodynamics is an outstanding theoretical issue. We propose an energy repartition principle that leads to a spectral (mode-dependent) temperature in steady-state nonequilibrium systems. The general concepts are illustrated by analytic solutions of the classical Heisenberg spin chain connected to Langevin heat reservoirs with arbitrary temperature profiles. Gradients of external magnetic fields are shown to localize spin waves in a Wannier-Zeemann fashion, while magnon interactions renormalize the spectral temperature. Our generic results are applicable to other thermodynamic systems such as Newtonian liquids, elastic solids, and Josephson junctions.
AB - The concept of temperature in nonequilibrium thermodynamics is an outstanding theoretical issue. We propose an energy repartition principle that leads to a spectral (mode-dependent) temperature in steady-state nonequilibrium systems. The general concepts are illustrated by analytic solutions of the classical Heisenberg spin chain connected to Langevin heat reservoirs with arbitrary temperature profiles. Gradients of external magnetic fields are shown to localize spin waves in a Wannier-Zeemann fashion, while magnon interactions renormalize the spectral temperature. Our generic results are applicable to other thermodynamic systems such as Newtonian liquids, elastic solids, and Josephson junctions.
UR - http://resolver.tudelft.nl/uuid:2e7b60df-5fde-478b-a0fb-f70da6e9f7ed
UR - http://www.scopus.com/inward/record.url?scp=85010333144&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.95.024417
DO - 10.1103/PhysRevB.95.024417
M3 - Article
AN - SCOPUS:85010333144
SN - 1098-0121
VL - 95
JO - Physical Review B (Condensed Matter and Materials Physics)
JF - Physical Review B (Condensed Matter and Materials Physics)
IS - 2
M1 - 024417
ER -