대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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하나의 전위장벽에 대한 전자의 터널링 시간

Electron Tunneling Time through a Single Potential Barrier

  • 이욱 (서울대학교 전기공학과) ;
  • 이병호 (서울대학교 전기공학과)
  • Lee, Wook (Department of Electrical Engineering, Seoul National University) ;
  • Lee, Byoung-Ho (Department of Electrical Engineering, Seoul National University)
  • 발행 : 1995.07.20
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초록

The question-"How fast a electron tunnels a potential barrier?" looks like simple, but is controversy for more than 40 years. Because "tunneling" involves complicated internal processes and its definition is ambiguous. Recent experiments showed that the phase time is the best model of tunneling time among other times-for example, dwell time, Larmor clock time etc. In this paper, we simulated the tunneling time for Gaussian wave packet by program InterQuanta and compared with the phase time. In particular we focused on the effect of wave packet spreading in momentum space(or real space) which is not expressed by the phase time formula.

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