2011/04/30 by Ariel Amir, Stefano Borini, Yuval Oreg +2
Engineering · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Mechanical and Optical Resonators #Physics #Simple (philosophy) #Statistical physics #Thermal Radiation and Cooling Technologies #cond-mat.dis-nn #cond-mat.mes-hall #cond-mat.mtrl-sci #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.107.186407
published as Phys. Rev. Lett. 107, 186407 (2011) · 4+ pages, 4 figures
openalex publication_date 2011/10/27 · arxiv created 2011/10/28 · arxiv updated 2015/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Experiments performed in the last years demonstrated slow relaxations and aging in the conductance of a large variety of materials. Here, we present experimental and theoretical results for conductance relaxation and aging for the case-study example of porous silicon. The relaxations are experimentally observed even at room temperature over time scales of hours, and when a strong electric field is applied for a time tw, the ensuing relaxation depends on tw. We derive a theoretical curve and show that all experimental data collapse onto it with a single time scale as a fitting parameter. This time scale is found to be of the order of thousands of seconds at room temperature. The generic theory suggested is not fine-tuned to porous silicon, and thus we believe the results should be universal, and the presented method should be applicable for many other systems manifesting memory and other glassy effects.