tag:blogger.com,1999:blog-5439168179960787195.post4769591528002557728..comments2024-03-28T17:13:01.117+10:00Comments on Condensed concepts: The challenge of colossal thermoelectric power in FeSb2Ross H. McKenziehttp://www.blogger.com/profile/09950455939572097456noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5439168179960787195.post-1321383358528169172014-04-01T19:20:07.608+10:002014-04-01T19:20:07.608+10:00Just a few comments.
Stating that "S(T) going...Just a few comments.<br />Stating that "S(T) going to zero with decreasing temperature" on a mV/K scaling is strange for me. Also S(T) is the entropy per charge carriers so in a clean systems you would not expect S(T~0 K) to be large especially on a mV/K scaling. Anyway, you will rarely see S(T) close to 0K in an insulator as the thermal noise from the large resistance would make any measurements at the micro volts level very hard.<br /><br />The resistivity of the FeSb2 sample, shown in the paper, doesn't seem to diverge even at 2 K which would indicates a bad metal and not a semiconductor ground state. <br /><br />Aside from this, I agree that this is interesting. At first, I thought that it was a phonon-drag effect.Majedhttps://www.blogger.com/profile/17446739600509037488noreply@blogger.com