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Time-Dependent Thermal Transport Theory.

Robert Biele1, Roberto D'Agosta1,2, Angel Rubio1,3

  • 1Nano-Bio Spectroscopy Group and European Theoretical Spectroscopy Facility (ETSF), Universidad del País Vasco, E-20018 San Sebastián, Spain.

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Summary
This summary is machine-generated.

This study introduces a new theoretical framework for nanoscale thermal transport, replacing temperature gradients with blackbody radiation. This approach unifies electron and phonon dynamics for broader applications.

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Area of Science:

  • Physics
  • Materials Science
  • Nanotechnology

Background:

  • Understanding thermal transport at the nanoscale is challenging.
  • The concept of local temperature is difficult to define at the nanoscale.

Purpose of the Study:

  • To propose a new theoretical approach for nanoscale thermal transport.
  • To replace temperature gradients with controllable external blackbody radiations.
  • To develop a unified formalism for thermal and electronic transport.

Main Methods:

  • Theoretical modeling using blackbody radiation.
  • Analysis of thermal current and temperature differences.
  • Extension to nonlinear regimes and transient phenomena.

Main Results:

  • The theory recovers known physical results, such as the linear relation between thermal current and temperature difference.
  • The approach accounts for nonlinear effects and transient phenomena.
  • The theory is general and applicable to both electron and phonon dynamics.

Conclusions:

  • The proposed theoretical approach offers a novel way to study thermal transport at the nanoscale.
  • This work provides a foundation for a unified theory of thermal and electronic transport.
  • The method's generality allows for adaptation to various nanoscale systems.