Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films

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	Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films
	Zhang, WH ; Sun, Y ; Zhang, JS ; Li, FS ; Guo, MH ; Zhao, YF ; Zhang, HM ; Peng, JP ; Xing, Y ; Wang, HC ; Fujita, T ; Hirata, A ; Li, Z ; Ding, H ; Tang, CJ ; Wang, M ; Wang, QY ; He, K ; Ji, SH ; Chen, X ; Wang, JF ; Xia, ZC ; Li, L ; Wang, YY ; Wang, J ; Wang, LL ; Chen, MW ; Xue, QK ; Ma, XC
刊名	CHINESE PHYSICS LETTERS
	2014
卷号	31 期号:1
ISSN号	0256-307X
通讯作者	Wang, J (reprint author), Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China.
中文摘要	We prepared one-unit-cell (1-UC) thick FeSe films on insulating SrTiO3 substrates with non-superconducting FeTe protection layers by molecular beam epitaxy for ex situ studies. By direct transport and magnetic measurements, we provide definitive evidence for high temperature superconductivity in the 1-UC FeSe films with an onset T-C above 40K and an extremely large critical current density J(C) similar to 1.7x10(6) A/cm(2) at 2 K, which are much higher than T-C similar to 8K and J(C)similar to 10(4) A/cm(2) for bulk FeSe, respectively. Our work may pave the way to enhancing and tailoring superconductivity by interface engineering.
资助信息	National Basic Research Program of China [2013CB934600, 2012CB921300]; National Natural Science Foundation of China [91121004, 11321091, 11374336]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59043]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, WH,Sun, Y,Zhang, JS,et al. Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films[J]. CHINESE PHYSICS LETTERS,2014,31(1).
APA	Zhang, WH.,Sun, Y.,Zhang, JS.,Li, FS.,Guo, MH.,...&Ma, XC.(2014).Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films.CHINESE PHYSICS LETTERS,31(1).
MLA	Zhang, WH,et al."Direct Observation of High-Temperature Superconductivity in One-Unit-Cell FeSe Films".CHINESE PHYSICS LETTERS 31.1(2014).