Molecular beam epitaxy of single unit- cell FeSe superconducting films on SrTiO3 (001)

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	Molecular beam epitaxy of single unit- cell FeSe superconducting films on SrTiO3 (001)
	Wang, M ; Ou, YB ; Li, FS ; Zhang, WH ; Tang, CJ ; Wang, LL ; Xue, QK ; Ma, XC
刊名	ACTA PHYSICA SINICA
	2014
卷号	63 期号:2
关键词	SrTiO3(001) single unit-cell FeSe films high temperature superconductivity molecular beam epitaxy
ISSN号	1000-3290
通讯作者	Xue, QK (reprint author), Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
中文摘要	Based on our previous work, we have systematically investigated the molecular beam epitaxy growth of single unit-cell FeSe films on SrTiO3(001) substrates and studied the surface morphology by scanning tunneling microscopy. We found that there are three key steps to obtain large-scale uniform one unit-cell superconducting FeSe films. First, the STO(001) substrates should be treated by HCl etching and thermal annealing under oxygen flux so that a specific TiO2- terminated STO(001) surface with well-defined step-terrace structure could be obtained. Second, the Fe and Se fluxes and substrate temperature have to be controlled delicately. At last, post-growth annealing is also critical, which can remove extra Se adatoms, and more importantly facilitate the necessary electron transfer for superconductivity transition.
资助信息	National Natural Science Foundation of China [11374336, 91121004]
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/311004/58815]
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	Wang, M,Ou, YB,Li, FS,et al. Molecular beam epitaxy of single unit- cell FeSe superconducting films on SrTiO3 (001)[J]. ACTA PHYSICA SINICA,2014,63(2).
APA	Wang, M.,Ou, YB.,Li, FS.,Zhang, WH.,Tang, CJ.,...&Ma, XC.(2014).Molecular beam epitaxy of single unit- cell FeSe superconducting films on SrTiO3 (001).ACTA PHYSICA SINICA,63(2).
MLA	Wang, M,et al."Molecular beam epitaxy of single unit- cell FeSe superconducting films on SrTiO3 (001)".ACTA PHYSICA SINICA 63.2(2014).