Scanning tunneling microscope light emission mechanism of Pb

Yoichi Uehara, Sukekatsu Ushioda

Research output: Contribution to journalArticle

Abstract

We have investigated the scanning tunneling microscope (STM) light emission from Pb(100) at 4.7 K and 18 K, respectively below and above the superconductive transition temperature of Pb (7.18 K). The results were analyzed with the dielectric theory of STM light emission. The spectra and the intensity of STM light emission from the normal state Pb (T = 18 K) were reproduced by the theory. The intensity for the superconducting state (T = 4.7 K) was ∼2.5 times greater than that for the normal state of Pb. This enhancement of the STM light emission intensity cannot be explained by the usual dielectric theory of STM light emission.

Original languageEnglish
Pages (from-to)309-311
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number1
DOIs
Publication statusPublished - 2002 Jan 1

Keywords

  • Light emission mechanism
  • Pb
  • STM
  • Superconducting
  • Tunneling

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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