• DOI:10.1103/PhysRevB.106.125105
• Corpus ID: 248798513

Thermal transport and nonmechanical forces in metals

@article{Amarel2022ThermalTA,
  title={Thermal transport and nonmechanical forces in metals},
  author={J. Amarel and D. Belitz and T. R. Kirkpatrick},
  journal={Physical Review B},
  year={2022}
}

• J. Amarel, D. Belitz, T. R. Kirkpatrick
• Published 12 May 2022
• Physics
• Physical Review B

We discuss contributions to the thermopower in an electron fluid. A simple argument based on Newton’s second law with the pressure gradient as the force suggests that the thermopower is given by a thermodynamic derivative, viz., the entropy per particle, rather than being an independent transport coefficient. The resolution is the existence of an entropic force that results from a coupling between the mass current and the heat current in the fluid. We also discuss and clarify some aspects of a recent paper (Phys. Rev. B 102 , 214306 (2020)) that provided a method for exactly solving electronic transport equations in the low-temperature limit.