Calorimetric scanning probes measure quantized thermal transport
The precise control of electron transport in microelectronics makes complex logic circuits possible that are in daily use in smartphones and laptops. Heat transport is of similar fundamental importance and its control is for instance necessary to efficiently cool the ever smaller chips. An international team including theoretical physicists from Konstanz, Junior Professor Fabian Pauly and Professor Peter Nielaba and their staff, has achieved a real breakthrough in better understanding heat transport at the nanoscale. The team used a system that experimentalists in nanoscience can nowadays realize quite routinely and keeps serving as the "fruit fly" for breakthrough discoveries: a chain of gold atoms. They used it to demonstrate the quantization of the electronic part of the thermal conductance. The study also shows that the Wiedemann-Franz law, a relation from classical physics, remains valid down to the atomic level. The results were published in the scientific journal Science on 16 February 2017.
New experiments on single-atom junctions could help in the development of novel nanoelectronics and memories.
Mon 20 Feb 17 from Nanotechweb
The precise control of electron transport in microelectronics makes complex logic circuits possible that are in daily use in smartphones and laptops. Heat transport is of similar fundamental ...
Fri 17 Feb 17 from Phys.org
Breakthrough with a chain of gold atoms in understanding heat transport, Fri 17 Feb 17 from ScienceDaily
Breakthrough with a chain of gold atoms, Fri 17 Feb 17 from Eurekalert
As you stretch gold into a strand one atom thick, an expressway for heat opens up. It’s called a quantum of thermal conductance and University of Michigan researchers have observed this ...
Wed 22 Feb 17 from Science Blog
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