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Threshold of Non-Destructive Pulse for Pt Tip of STM on Graphite Surface
引用本文:徐春凯,魏征,陈向军,徐克尊,黄文浩.Threshold of Non-Destructive Pulse for Pt Tip of STM on Graphite Surface[J].中国物理快报,2004,21(3):524-526.
作者姓名:徐春凯  魏征  陈向军  徐克尊  黄文浩
作者单位:[1]LaboratoryofBond-SelectiveChemistry,LaboratoryofAtomicandMolecularPhysics,DepartmentofModernPhysics,UniversityofScienceandTechnologyofChina,Hefei230027 [2]DepartmentofPrecisionMachineryandInstrumentation,UniversityofScienceandTechnologyofChina,Hefei230027
摘    要:The experimental relationship between width and amplitude of the non-destructive threshold pulse for Pt tip of a scanning tunneling microscope (STM) on graphite surface have been studied strictly and systematically in a wide range of pulse width for the first time. The threshold curve of amplitude versus width indicates that the amplitude of threshold pulse will increase with the decrease of the pulse width. A more rigorous explanation is suggested to interpret the dependence of threshold pulse amplitude on width. Fitted with the experimental data,a new empirical formula is given, extrapolated from which the threshold pulse amplitude will rise to 50 V when the pulse width decreases to 10ns.

关 键 词:石墨表面  扫描隧道显微镜  铅探针  脉冲宽度  脉冲振幅  STM  脉冲电压
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