Observation of normal-metal phonons with proximity-effect tunneling

P. M. Chaikin; P. K. Hansma

doi:10.1103/PhysRevLett.36.1552

Observation of normal-metal phonons with proximity-effect tunneling

P. M. Chaikin, P. K. Hansma

Research output: Contribution to journal › Article › peer-review

Abstract

We have measured the tunneling characteristics (dVdI and d2VdI2 versus V) of thin film junctions of the form Al-I-M-Pb, where M is Ag, Cu, or Al. These tunneling characteristics have dips at voltages corresponding to peaks in the phonon density of states of M and peaks at voltages corresponding to the peaks in the phonon density of states of Pb. From the amplitude of the dips due to the phonons of M we can crudely estimate the electron-phonon coupling constant M for Al and Cu.

Original language	English (US)
Pages (from-to)	1552-1555
Number of pages	4
Journal	Physical Review Letters
Volume	36
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.36.1552
State	Published - 1976

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General Physics and Astronomy

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10.1103/PhysRevLett.36.1552

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title = "Observation of normal-metal phonons with proximity-effect tunneling",

abstract = "We have measured the tunneling characteristics (dVdI and d2VdI2 versus V) of thin film junctions of the form Al-I-M-Pb, where M is Ag, Cu, or Al. These tunneling characteristics have dips at voltages corresponding to peaks in the phonon density of states of M and peaks at voltages corresponding to the peaks in the phonon density of states of Pb. From the amplitude of the dips due to the phonons of M we can crudely estimate the electron-phonon coupling constant M for Al and Cu.",

author = "Chaikin, {P. M.} and Hansma, {P. K.}",

note = "Funding Information: Research supported by National Science Foundation Grant No. GH-37250. Funding Information: Research supported by National Science Foundation Grant No. DMR72-03276 A01. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.",

year = "1976",

doi = "10.1103/PhysRevLett.36.1552",

language = "English (US)",

volume = "36",

pages = "1552--1555",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Observation of normal-metal phonons with proximity-effect tunneling

AU - Chaikin, P. M.

AU - Hansma, P. K.

N1 - Funding Information: Research supported by National Science Foundation Grant No. GH-37250. Funding Information: Research supported by National Science Foundation Grant No. DMR72-03276 A01. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.

PY - 1976

Y1 - 1976

N2 - We have measured the tunneling characteristics (dVdI and d2VdI2 versus V) of thin film junctions of the form Al-I-M-Pb, where M is Ag, Cu, or Al. These tunneling characteristics have dips at voltages corresponding to peaks in the phonon density of states of M and peaks at voltages corresponding to the peaks in the phonon density of states of Pb. From the amplitude of the dips due to the phonons of M we can crudely estimate the electron-phonon coupling constant M for Al and Cu.

AB - We have measured the tunneling characteristics (dVdI and d2VdI2 versus V) of thin film junctions of the form Al-I-M-Pb, where M is Ag, Cu, or Al. These tunneling characteristics have dips at voltages corresponding to peaks in the phonon density of states of M and peaks at voltages corresponding to the peaks in the phonon density of states of Pb. From the amplitude of the dips due to the phonons of M we can crudely estimate the electron-phonon coupling constant M for Al and Cu.

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JO - Physical Review Letters

JF - Physical Review Letters

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Observation of normal-metal phonons with proximity-effect tunneling

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