Observation of bias-voltage-induced atomic diffusion on a gold STM tip

Hong Bin Yu, B. O. Gao, Zheng Gai, Wei Sheng Yang

Research output: Contribution to journalArticlepeer-review


By gradually varying the bias voltage between the gold tip and the gold sample, it is observed with the scanning tunneling microscope that large bias voltages may induce atoms to diffuse on the gold tip and ofter result in an increasing of the tip length. We also observed the field emission and resonant tunneling phenomena. A mechanism based on the polarization of the tip is proposed for the field-induced atomic diffusion. Such field-induced diffusion is believed to be responsible for surface modification with large bias voltage pulses.

Original languageEnglish (US)
Pages (from-to)686-687
Number of pages2
JournalWuli Xuebao/Acta Physica Sinica
Issue number4
StatePublished - Dec 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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