High temperature superconducting FeSe films on SrTiO3 substrates

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	High temperature superconducting FeSe films on SrTiO3 substrates
	Sun, Y ; Zhang, WH ; Xing, Y ; Li, FS ; Zhao, YF ; Xia, ZC ; Wang, LL ; Ma, XC ; Xue, QK ; Wang, J
刊名	SCIENTIFIC REPORTS
	2014
卷号	4
ISSN号	2045-2322
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	Interface enhanced superconductivity at two dimensional limit has become one of most intriguing research directions in condensed matter physics. Here, we report the superconducting properties of ultra-thin FeSe films with the thickness of one unit cell (1-UC) grown on conductive and insulating SrTiO3 (STO) substrates. For the 1-UC FeSe on conductive STO substrate (Nb-STO), the magnetization versus temperature (M-T) measurement shows a drop crossover around 85 K. For the FeSe films on insulating STO substrate, systematic transport measurements were carried out and the sheet resistance of FeSe films exhibits Arrhenius TAFF behavior with a crossover from a single-vortex pinning region to a collective creep region. More intriguing, sign reversal of Hall resistance with temperature is observed, demonstrating a crossover from hole conduction to electron conduction above T-C in 1-UC FeSe films.
资助信息	National Basic Research Program of China [2013CB934600, 2012CB921300]; National Natural Science Foundation of China [11222434, 11174007, 91121004, 11321091, 11374336]; Research Fund for the Doctoral Program of Higher Education (RFDP) of China; China Postdoctoral Science Foundation [2011M500180, 2012T50012]
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/311004/59701]
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	Sun, Y,Zhang, WH,Xing, Y,et al. High temperature superconducting FeSe films on SrTiO3 substrates[J]. SCIENTIFIC REPORTS,2014,4.
APA	Sun, Y.,Zhang, WH.,Xing, Y.,Li, FS.,Zhao, YF.,...&Wang, J.(2014).High temperature superconducting FeSe films on SrTiO3 substrates.SCIENTIFIC REPORTS,4.
MLA	Sun, Y,et al."High temperature superconducting FeSe films on SrTiO3 substrates".SCIENTIFIC REPORTS 4(2014).