Superconductivity induced by isovalent doping in single crystals of

✍ Scribed by S. Kasahara; K. Hashimoto; R. Okazaki; H. Shishido; M. Yamashita; K. Ikada; S. Tonegawa; N. Nakata; Y. Sensyu; H. Takeya; K. Hirata; T. Shibauchi; T. Terashima; Y. Matsuda

• Book ID: 104084240
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 701 KB
• Volume: 470
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2009.10.137

✦ Synopsis

Single crystals of BaFe 2 ðAs 1Àx P x Þ 2 are successfully grown. Resistivity measurements show a systematic reduction of structural and antiferromagnetic spin-density-wave (SDW) transition temperatures and a subsequent emergence of superconductivity upon P-doping. A dome shaped superconducting phase is shown in a wide range of x, with the highest transition temperature T c % 31 K locating near the end of SDW phase. A pronounced T-linear resistivity in the normal state is found in the vicinity of the optimally doping, showing a clear distinction from the conventional Fermi-liquid picture. The evolution of the resistivity and the phase diagram resemble those found in the parent BaFe 2 As 2 under pressures, indicating that the substitution of P for As serve as chemical pressures.