tag:blogger.com,1999:blog-13869903.post7475754459446503304..comments2024-03-28T04:15:44.459-05:00Comments on nanoscale views: Getting light out of plasmonic tunnel junctions - the sequelDouglas Natelsonhttp://www.blogger.com/profile/13340091255404229559noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-13869903.post-59487735196912520272022-11-20T19:23:28.930-06:002022-11-20T19:23:28.930-06:00Anon@11:33, yep. Aluminum is so easy to push arou...Anon@11:33, yep. Aluminum is so easy to push around (hence one reason the chip industry switched to copper for interconnects) that even cooling the substrate to 5 K doesn't help if the current density is sufficiently high.Douglas Natelsonhttps://www.blogger.com/profile/13340091255404229559noreply@blogger.comtag:blogger.com,1999:blog-13869903.post-57234436134456747782022-10-10T23:33:01.180-05:002022-10-10T23:33:01.180-05:00I guess cooling to low temp also doesn't help ...I guess cooling to low temp also doesn't help with electromigration in this case because of the large Joule heating?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-13869903.post-78802534281410660232022-10-10T08:16:38.884-05:002022-10-10T08:16:38.884-05:00Anon@2:20, one reason we started playing with Al j...Anon@2:20, one reason we started playing with Al junctions was to see how far into the blue we could push the luminescence. The big limitation really seems to be the vulnerability of Al to electromigration. In our configuration it just doesn't seem possible to get the junctions to be stable up at biases of, e.g., 2.5 V and the currents where you might to see blue to UV emission. At those current densities and field conditions, the atoms move around and lower the conductance. Douglas Natelsonhttps://www.blogger.com/profile/13340091255404229559noreply@blogger.comtag:blogger.com,1999:blog-13869903.post-43854665122208874242022-10-09T14:20:08.400-05:002022-10-09T14:20:08.400-05:00Very cool! Could you realistically get EUV photons...Very cool! Could you realistically get EUV photons out of an aluminum junction? I think the plasma frequency of aluminum was above 12V if I'm not mistaken. Though it seems maybe the surface plasmon polariton frequency is more relevant here?Anonymousnoreply@blogger.com