1999/08/13 by A. Buldum, Alper Buldum, S. Ciraci +2 · 1 citation
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat
paper · pdf · doi:10.1088/0953-8984/12/14/311
14 pages, 2 separate figures
arxiv created 1999/08/13 · openalex publication_date 2000/03/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We studied the phononic heat transfer through an atomic dielectric wire with both infinite and finite lengths by using a model Hamiltonian approach. At low temperature under ballistic transport, the thermal conductance contributed by each phonon branch of a uniform and harmonic chain cannot exceed the well known value which depends linearly on temperature but is material independent. We predict that this ballistic thermal conductance will exhibit stepwise behaviour as a function of temperature. By performing numerical calculations on more realistic systems, where small atomic chains are placed between two reservoirs, we also found resonant modes, which should also lead to stepwise behaviour in the thermal conductance.