Talk:Umklapp scattering

Capitalization

Can someone tell me, why Umklapp is written with a capital letter? --Arnero 14:07, 22 February 2006 (UTC)[reply]

It is a german word, meaning "flip-over", used as a name. I'm not too sure about policy, but in german I'd surely capitalize it. On the other hand eigenvalue is not capitalized and Bremsstrahlung is inconsistent in its article. --Dschwen 16:15, 22 February 2006 (UTC)[reply]

I believe my textbook has it capitalized. 130.215.112.204 22:22, 21 April 2007 (UTC) John S[reply]

Resistivity

Can it be that this sentence is wrong? From my knowledge this is wrong: Quote :"Umklapp scattering is the dominant process for thermal resistivity at low temperatures for low defect crystals." I think it is the dominant process for high temperatures. Besides, the german word for flip-over process is : "Der Umklappprozess". In this case Umklapp is a noun and should be capitalized. —Preceding unsigned comment added by Micjohn 123 (talk • contribs) 15:45, 11 December 2007 (UTC)[reply]

No, that is ... wrong. At high tempertures, the dominant process is electron-phonon scattering, as any textbook will state. You can find a discussion on Umklapp and resistivity in Ashcroft & Mermin, "Solid State Physics". The original statement was correct. 67.198.37.16 (talk) 04:46, 16 September 2020 (UTC)[reply]

Oh whoops, I misread "electrical" for "thermal". Don't know what the deal is for thermal. 67.198.37.16 (talk) 18:56, 17 September 2020 (UTC)[reply]