(Li0.84Fe0.16)OHFe0.98Se superconductor: Ion-exchange synthesis of large single-crystal and highly two-dimensional electron properties

	(Li0.84Fe0.16)OHFe0.98Se superconductor: Ion-exchange synthesis of large single-crystal and highly two-dimensional electron properties
	Dong, Xiaoli 1; Jin, Kui 1; Yuan, Dongna 1; Zhou, Huaxue 1,5; Yuan, Jie 1; Huang, Yulong 1; Hua, Wei 2; Sun, Junliang 2; Zheng, Ping 1; Hu, Wei 1
刊名	PHYSICAL REVIEW B
	2015-08-24
卷号	92 期号:6
英文摘要	A large and high-quality single crystal (Li0.84Fe0.16)OHFe0.98Se, the optimal superconductor of a reported (Li1-xFex)OHFe1-ySe system, has been successfully synthesized via a hydrothermal ion-exchange technique. The superconducting transition temperature (T-c) of 42 K is determined by magnetic susceptibility and electric resistivity measurements, and the zero-temperature upper critical magnetic fields are evaluated as 79 and 313 T for the field along the c axis and the ab plane, respectively. The ratio of out-of-plane to in-plane electric resistivity rho(c)/rho(ab) is found to increase with decreasing temperature and to reach a high value of 2500 at 50 K, with an evident kink occurring at a characteristic temperature T* = 120 K. The negative in-plane Hall coefficient indicates that electron carriers dominate in the charge transport, and the hole contribution is significantly reduced as the temperature is lowered to approach T . From T down to T-c we observe the linear temperature dependencies of the in-plane electric resistivity and the magnetic susceptibility for the FeSe layers. Our findings thus reveal that the normal state of (Li0.84Fe0.16)OHFe0.98Se becomes highly two dimensional and anomalous prior to the superconducting transition, providing an insight into the mechanism of high-T-c superconductivity.
收录类别	SCI
语种	英语
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28820]
专题	化学研究所_高技术材料实验室
作者单位	1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 3.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 4.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 5.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
推荐引用方式 GB/T 7714	Dong, Xiaoli,Jin, Kui,Yuan, Dongna,et al. (Li0.84Fe0.16)OHFe0.98Se superconductor: Ion-exchange synthesis of large single-crystal and highly two-dimensional electron properties[J]. PHYSICAL REVIEW B,2015,92(6).
APA	Dong, Xiaoli.,Jin, Kui.,Yuan, Dongna.,Zhou, Huaxue.,Yuan, Jie.,...&Zhao, Zhongxian.(2015).(Li0.84Fe0.16)OHFe0.98Se superconductor: Ion-exchange synthesis of large single-crystal and highly two-dimensional electron properties.PHYSICAL REVIEW B,92(6).
MLA	Dong, Xiaoli,et al."(Li0.84Fe0.16)OHFe0.98Se superconductor: Ion-exchange synthesis of large single-crystal and highly two-dimensional electron properties".PHYSICAL REVIEW B 92.6(2015).