Transport properties of the itinerant-electron weak ferromagnet

✍ Scribed by Sho Tatsuoka; Kenya Tanaka; Takashi Saito; Takahiro Namiki; Keitaro Kuwahara; Yuji Aoki; Hideyuki Sato

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 351 KB
• Volume: 404
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2009.07.033

✦ Synopsis

We have investigated the electrical resistivity under magnetic fields in the itinerant-electron weak ferromagnet LaFe 4 As 12 , in order to clarify the characteristics of spin fluctuations in this material by comparison with the reported typical itinerant-electron ferromagnets. As a common feature to the typical itinerant-electron weak ferromagnets, strong enhancement of negative longitudinal magnetoresistivity was observed near T C , reflecting the suppression of spin fluctuations. As a unique behavior of LaFe 4 As 12 , we found a considerable positive component of the magnetoresistivity above T C .