[9a-Z27-1~13] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

[9a-Z27-9] Control of carrier concentration and superconducting transition
of Bi₂Sr_2-xLa_xCuO_6+δ films

〇Ryusuke Makita¹, Kensuke Nakajima¹, Shouhei Miura², Takeshi Kawae², Masanori Nagao³ (1.Yamagata Univ., 2.College of Sci.&Eng.Kanazawa Univ., 3.Univ. of Yamanashi)

Keywords:superconductor

An attempt to modulate the superconducting transition temperature by the electric field effect dates back to 1960, and the high temperature cuprate superconductor discovered in 1986 is expected to have a large electric field effect because T_C changes greatly depending on the carrier concentration. We focused on Bi-based cuprate high-temperature superconductor, Bi₂Sr₂CuO_6+δ, which has the thinnest conductive layer, and fabricated Bi-2201 and Bi(La)-2201 in which a part of Sr was replaced with La, The superconducting transition property and the carrier doping amount were evaluated.