Superconductivity at 15 K in NdFe0.9Rh0.1AsO without F-doping

✍ Scribed by David Bérardan; Lidong Zhao; Loreynne Pinsard-Gaudart; Nita Dragoe

• Book ID: 104084393
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 229 KB
• Volume: 470
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2009.12.006

✦ Synopsis

We present results of transport and magnetic properties measurements performed on polycrystalline NdFe 0.9 Rh 0.1 AsO. Despite the large size difference between Fe and Rh elements, this compound undergoes a superconducting transition with T c $ 15 K. We have compared the transport properties of this Rh-doped oxypnictide with that of optimally doped NdFeAsO 0.88 F 0.12 . Contrary to this latter compound, a strong upturn of the normal-state resistivity occurs above T c , and no peak of the thermopower has been observed.