FERMI VELOCITY OF SILVER FROM PROXIMITY EFFECT TUNNELING.

B. F. Donovan-Vojtovic, S. A. Dodds, P. M. Chaikin

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    Measured the tunneling characteristics of a series of Al-oxide-(Ag//1// minus //xEr//x)Pb proximity effect sandwiches for normal metal thicknesses ranging from 500 A to 3000 A and parallel magnetic fields of 0-1000 gauss. Second derivative characteristics (d**2V/dI**2) reveal the Pb phonon structure through electron interference effects and also reveal structure at the Ag phonon frequencies. Application of a magnetic field less than the critical field of the sandwich reduces the Ag phonon structure. Introduction of impurities reduces the interferences effects with little effect on the Ag phonon structure. Thus the two contributions to the tunneling characteristics can be separated. Comparison with the theory of McMillan and Rowell then allows determination of V//F. Comparison of the theoretical and experimental curves for the interference term shows a frequency dependent mean free path from phonon emission and allows an independent measure of the electron-phonon coupling in the normal metal.

    Original languageEnglish (US)
    Title of host publicationJ Phys (Paris)
    Pages521-525
    Number of pages5
    Volume39
    Edition5
    StatePublished - May 1978

    Fingerprint

    Silver
    Magnetic fields
    Electrons
    Metals
    Impurities
    Derivatives
    Oxides

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Donovan-Vojtovic, B. F., Dodds, S. A., & Chaikin, P. M. (1978). FERMI VELOCITY OF SILVER FROM PROXIMITY EFFECT TUNNELING. In J Phys (Paris) (5 ed., Vol. 39, pp. 521-525)

    FERMI VELOCITY OF SILVER FROM PROXIMITY EFFECT TUNNELING. / Donovan-Vojtovic, B. F.; Dodds, S. A.; Chaikin, P. M.

    J Phys (Paris). Vol. 39 5. ed. 1978. p. 521-525.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Donovan-Vojtovic, BF, Dodds, SA & Chaikin, PM 1978, FERMI VELOCITY OF SILVER FROM PROXIMITY EFFECT TUNNELING. in J Phys (Paris). 5 edn, vol. 39, pp. 521-525.
    Donovan-Vojtovic BF, Dodds SA, Chaikin PM. FERMI VELOCITY OF SILVER FROM PROXIMITY EFFECT TUNNELING. In J Phys (Paris). 5 ed. Vol. 39. 1978. p. 521-525
    Donovan-Vojtovic, B. F. ; Dodds, S. A. ; Chaikin, P. M. / FERMI VELOCITY OF SILVER FROM PROXIMITY EFFECT TUNNELING. J Phys (Paris). Vol. 39 5. ed. 1978. pp. 521-525
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