| The non-destructive threshold of the graphite surface by STM in the ultra-fast pulse mode |
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| 作者姓名： | 徐春凯 魏征 陈向军 徐克尊 |
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| 作者单位： | Hefei National Laboratory for Physical Sciences at
Microscale, Department of Modern Physics, University of Science
and Technology of China, Hefei, Anhui 230026, China;Hefei National Laboratory for Physical Sciences at
Microscale, Department of Modern Physics, University of Science
and Technology of China, Hefei, Anhui 230026, China;Hefei National Laboratory for Physical Sciences at
Microscale, Department of Modern Physics, University of Science
and Technology of China, Hefei, Anhui 230026, China;Hefei National Laboratory for Physical Sciences at
Microscale, Department of Modern Physics, University of Science
and Technology of China, Hefei, Anhui 230026, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （No 10404026） and the Specialized Research Fund for the Doctoral Program of Higher Education （No 20020358008）. |
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| 摘 要： | In this paper single ultra-fast voltage pulses are introduced to the Pt/Ir tip of a scanning tunnelling microscope （STM）, and the non-destructive threshold of the graphite surface is studied systematically in a wide range of pulse durations （from 104 to 8 ns）. Considering the waveform distortion of the pulses at the tunnelling region, this paper gives the corrected threshold curve of pulse amplitude depending on pulse duration. A new explanation of threshold power has been suggested and fits the experimental results well.
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| 关 键 词： | 非破坏阈值 电压脉冲 隧道效应 超快速脉冲模式 |
| 收稿时间： | 2006-09-14 |
| 修稿时间： | 2006-09-14 |
The non-destructive threshold of the graphite surface by STM in the ultra-fast pulse mode |
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| Xu Chun-Kai,Wei Zheng,Chen Xiang-Jun and Xu Ke-Zun.The non-destructive threshold of the graphite surface by STM in the ultra-fast pulse mode[J].Chinese Physics B,2007,16(8):2315-2318. |
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| Authors: | Xu Chun-Kai Wei Zheng Chen Xiang-Jun and Xu Ke-Zun |
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| Institution: | Hefei National Laboratory for Physical Sciences at Microscale, Department of Modern Physics University of Science and Technology of China, Hefei, Anhui 230026, China |
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| Abstract: | In this paper single ultra-fast voltage pulses are introduced to the
Pt/Ir tip of a scanning tunnelling microscope (STM), and the
non-destructive threshold of the graphite surface is studied
systematically in a wide range of pulse durations (from 10$^{4}$ to
8\,ns). Considering the waveform distortion of the pulses at the
tunnelling region, this paper gives the corrected threshold curve of
pulse amplitude depending on pulse duration. A new explanation of
threshold power has been suggested and fits the experimental results
well. |
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| Keywords: | non-destructive threshold voltage pulse scanning tunnelling microscope |
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