A sizeable negative magnetoresistance (MR) has been observed for oxypnictides LnOMnAs (Ln = La,Nd). MR up to -24% is observed at 200 K for LaOMnAs which is unprecedented for divalent Mn2+. Both materials are weak ferromagnets with transition temperatures above room temperature.
|Number of pages||3|
|Publication status||Published - 2010|
- range-hopping regime