tag:blogger.com,1999:blog-5439168179960787195.post1892931355642189469..comments2024-03-28T17:13:01.117+10:00Comments on Condensed concepts: Deconstructing noise in organic charge transfer saltsRoss H. McKenziehttp://www.blogger.com/profile/09950455939572097456noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5439168179960787195.post-19850773817978618042016-09-28T22:44:36.729+10:002016-09-28T22:44:36.729+10:00Interesting indeed.
A remark/a word of caution:
B...Interesting indeed.<br /><br />A remark/a word of caution:<br />Browsing (not properly reading yet) the paper by Mueller et al, I get that the relaxation involves cooperative movement of molecules (or molecular groups).<br />Then one has to be careful interpreting the data in terms of a distribution of (independent) activation energies: the activation energies of a system where cooperative (correlated, or maybe very specific: hierarchical) events happen may not reflect the activation energies of different individual steps.<br /><br />(As with so many things: ) This was recognized by Phil Anderson in 1984.<br />Palmer et al, PRL 53, 958 (1984).<br /><br />The correspondence between the maximum of the extracted activation energy distribution and the calculated activation energy barrier for conformal changes may (...) therefore be fortuitous,<br />Though in a system where part of the events are indeed independent (in Anderson's terminology: parallel) and part are in series (hierarchical), this would depend on the relative fraction of independent and correlated events.Anonymousnoreply@blogger.com