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1篇 您的检索式：作者名="Tenglong Lu"

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		题名	作者	年代	出处	被引量
	1	Percolation-induced resistivity drop in lutetium dihydride with controllable electrical conductivity over six orders of magnitude显示文摘The recent report of near-ambient superconductivity in the nitrogen-doped lutetium hydride has attracted considerable attention.Subsequent follow-up studies confirmed the pressure-induced color changes in both N-free and N-doped LuH_(2) but failed to reproduce superconductivity. It remains a puzzle why the samples in the original report exhibited pronounced resistance anomaly reminiscent of the superconducting transition. Here, we show that percolation of metallic grains with high conductivity through the insulating surfaces in cold-pressed LuH_(2) samples can occasionally produce sharp resistance drops, which even display magnetic field and/or current dependences but stay far from zero resistance. The insulating surface of LuH2grain should be attributed to the modification of hydrogen stoichiometry or the contamination by oxygen/nitrogen, resulting in an increase of resistance by over six orders of magnitude. Such an effect is more significant than that discovered recently in LaH_(3±x), which may indicate that LuH_(2) can be a potential superionic conductor. Our results call for caution in asserting the resistivity drops as superconductivity and invalidate the background subtraction in analyzing the corresponding resistance data.	Ningning Wang Jun Hou Ziyi Liu Tenglong Lu Pengfei Shan Congcong Chai Shifeng Jin Liang Ma Lifen Shi Xiao Wang Youwen Long Yue Liu Hua Zhang Xiaoli Dong Sheng Meng Miao Liu Jinguang Cheng	2023	Science China(Physics,Mechanics & Astronomy)2023，66，9：	0

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