Locality of information obtained from proximity-electron-tunneling spectroscopy

G. B. Arnold, E. L. Wolf

Research output: Contribution to journalArticle

Abstract

The locality of the information obtained by the technique of proximity-electron tunneling (PETS) is analyzed, with particular attention to the effects on the measured effective-phonon spectrum a2F(ω) of disorder or impurities near the surface of the superconductor electrode. As in conventional tunnel junctions it is determined that the (energy-dependent) electron mean free path determines the maximum depth of the superconductor of which the measured phonon spectrum is characteristic. An averaging length L(E) is defined and found to be typically larger in proximity junctions than in conventional junctions. This can make PETS results inherently less susceptible than conventional results to surface disorder of the superconductor.

Original languageEnglish (US)
Pages (from-to)1541-1549
Number of pages9
JournalPhysical Review B
Volume25
Issue number3
DOIs
StatePublished - 1982

Fingerprint

Electron tunneling
electron tunneling
Superconducting materials
proximity
Spectroscopy
disorders
spectroscopy
Tunnel junctions
tunnel junctions
mean free path
Impurities
impurities
Electrodes
electrodes
Electrons
electrons
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Locality of information obtained from proximity-electron-tunneling spectroscopy. / Arnold, G. B.; Wolf, E. L.

In: Physical Review B, Vol. 25, No. 3, 1982, p. 1541-1549.

Research output: Contribution to journalArticle

Arnold, G. B. ; Wolf, E. L. / Locality of information obtained from proximity-electron-tunneling spectroscopy. In: Physical Review B. 1982 ; Vol. 25, No. 3. pp. 1541-1549.
@article{655f5efb746148b5b8cea395ff4a9b14,
title = "Locality of information obtained from proximity-electron-tunneling spectroscopy",
abstract = "The locality of the information obtained by the technique of proximity-electron tunneling (PETS) is analyzed, with particular attention to the effects on the measured effective-phonon spectrum a2F(ω) of disorder or impurities near the surface of the superconductor electrode. As in conventional tunnel junctions it is determined that the (energy-dependent) electron mean free path determines the maximum depth of the superconductor of which the measured phonon spectrum is characteristic. An averaging length L(E) is defined and found to be typically larger in proximity junctions than in conventional junctions. This can make PETS results inherently less susceptible than conventional results to surface disorder of the superconductor.",
author = "Arnold, {G. B.} and Wolf, {E. L.}",
year = "1982",
doi = "10.1103/PhysRevB.25.1541",
language = "English (US)",
volume = "25",
pages = "1541--1549",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "3",

}

TY - JOUR

T1 - Locality of information obtained from proximity-electron-tunneling spectroscopy

AU - Arnold, G. B.

AU - Wolf, E. L.

PY - 1982

Y1 - 1982

N2 - The locality of the information obtained by the technique of proximity-electron tunneling (PETS) is analyzed, with particular attention to the effects on the measured effective-phonon spectrum a2F(ω) of disorder or impurities near the surface of the superconductor electrode. As in conventional tunnel junctions it is determined that the (energy-dependent) electron mean free path determines the maximum depth of the superconductor of which the measured phonon spectrum is characteristic. An averaging length L(E) is defined and found to be typically larger in proximity junctions than in conventional junctions. This can make PETS results inherently less susceptible than conventional results to surface disorder of the superconductor.

AB - The locality of the information obtained by the technique of proximity-electron tunneling (PETS) is analyzed, with particular attention to the effects on the measured effective-phonon spectrum a2F(ω) of disorder or impurities near the surface of the superconductor electrode. As in conventional tunnel junctions it is determined that the (energy-dependent) electron mean free path determines the maximum depth of the superconductor of which the measured phonon spectrum is characteristic. An averaging length L(E) is defined and found to be typically larger in proximity junctions than in conventional junctions. This can make PETS results inherently less susceptible than conventional results to surface disorder of the superconductor.

UR - http://www.scopus.com/inward/record.url?scp=25744451682&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=25744451682&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.25.1541

DO - 10.1103/PhysRevB.25.1541

M3 - Article

AN - SCOPUS:25744451682

VL - 25

SP - 1541

EP - 1549

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 3

ER -