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Transition metal and rare-earth nitrides: a new route to magnetic semiconductors – Walter Lambrecht

Date: Mon. January 29th, 2007, 12:30 pm-1:30 pm
Location: Rockefeller 221

Transition metal and rare-earth nitrides have both potential as magnetic semiconductors. I will present two case studies: Mn-doped ScN, which, unfortunately, might be a spinglass instead of a ferromagnetic semiconductor, and Gd-doped GaN, which was claimed to have COLOSSAL magnetic moments. Along the way, I will discuss recent computational advances to study magnetic exchange interactions and strongly correlated systems, such as non-collinear magnetic linear response calculations and LSDA+U.

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