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Title: Coupling between Phonons and Intrinsic Josephson Oscillations in Cuprate Superconductors

Abstract

The recently reported subgap structures in the current-voltage characteristic of intrinsic Josephson junctions in the high-T{sub c} superconductors Tl{sub 2}Ba {sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta} } and Bi{sub 2}Sr {sub 2}CaCu{sub 2}O{sub 8+{delta}} are explained by the coupling between c -axis phonons and Josephson oscillations. A model is developed where c -axis lattice vibrations between adjacent superconducting multilayers are excited by the Josephson oscillations in a resistive junction. The voltages of the lowest structures correspond well to the frequencies of longitudinal c -axis phonons with large oscillator strength in the two materials, providing a new measurement technique for this quantity. {copyright} {ital 1997} {ital The American Physical Society}

Authors:
; ; ;  [1]; ; ;  [2]
  1. Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
  2. Physikalisches Institut III, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany)
Publication Date:
OSTI Identifier:
527063
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 79; Journal Issue: 4; Other Information: PBD: Jul 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 66 PHYSICS; HIGH-TC SUPERCONDUCTORS; JOSEPHSON JUNCTIONS; PHONONS; THALLIUM OXIDES; BARIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; BISMUTH OXIDES; STRONTIUM OXIDES; LATTICE VIBRATIONS; OSCILLATOR STRENGTHS

Citation Formats

Helm, C, Preis, C, Forsthofer, F, Keller, J, Schlenga, K, Kleiner, R, and Mueller, P. Coupling between Phonons and Intrinsic Josephson Oscillations in Cuprate Superconductors. United States: N. p., 1997. Web. doi:10.1103/PhysRevLett.79.737.
Helm, C, Preis, C, Forsthofer, F, Keller, J, Schlenga, K, Kleiner, R, & Mueller, P. Coupling between Phonons and Intrinsic Josephson Oscillations in Cuprate Superconductors. United States. https://doi.org/10.1103/PhysRevLett.79.737
Helm, C, Preis, C, Forsthofer, F, Keller, J, Schlenga, K, Kleiner, R, and Mueller, P. 1997. "Coupling between Phonons and Intrinsic Josephson Oscillations in Cuprate Superconductors". United States. https://doi.org/10.1103/PhysRevLett.79.737.
@article{osti_527063,
title = {Coupling between Phonons and Intrinsic Josephson Oscillations in Cuprate Superconductors},
author = {Helm, C and Preis, C and Forsthofer, F and Keller, J and Schlenga, K and Kleiner, R and Mueller, P},
abstractNote = {The recently reported subgap structures in the current-voltage characteristic of intrinsic Josephson junctions in the high-T{sub c} superconductors Tl{sub 2}Ba {sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta} } and Bi{sub 2}Sr {sub 2}CaCu{sub 2}O{sub 8+{delta}} are explained by the coupling between c -axis phonons and Josephson oscillations. A model is developed where c -axis lattice vibrations between adjacent superconducting multilayers are excited by the Josephson oscillations in a resistive junction. The voltages of the lowest structures correspond well to the frequencies of longitudinal c -axis phonons with large oscillator strength in the two materials, providing a new measurement technique for this quantity. {copyright} {ital 1997} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.79.737},
url = {https://www.osti.gov/biblio/527063}, journal = {Physical Review Letters},
number = 4,
volume = 79,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 1997},
month = {Tue Jul 01 00:00:00 EDT 1997}
}