Helm, Ch. ; Preis, Ch. ; Walter, Ch. ; Keller, J.
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Physical Review B |
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| Verlag: | AMER PHYSICAL SOC |
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| Ort der Veröffentlichung: | COLLEGE PK |
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| Band: | 62 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 9 |
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| Seitenbereich: | S. 6002-6014 |
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| Datum: | 2000 |
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| Institutionen: | Physik > Institut für Theoretische Physik |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1103/PhysRevB.62.6002 | DOI |
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| Stichwörter / Keywords: | HIGH-TC SUPERCONDUCTORS; INFRARED-ACTIVE MODES; SUBGAP STRUCTURES; CUPRATE SUPERCONDUCTORS; LATTICE-DYNAMICS; SINGLE-CRYSTALS; JUNCTIONS; BI2SR2CACU2O8+DELTA; TL2BA2CA2CU3O10+DELTA; SPECTROSCOPY; |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 74131 |
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Zusammenfassung
A microscopic theory for the coupling of intrinsic Josephson oscillations in layered superconductors with longitudinal c-axis phonons is developed, it is shown that the influence of lattice vibrations on the c-axis transport can be fully described by introducing an effective longitudinal dielectric function epsilon(ph)(L)(w). Resonances in the I-V characteristic appear at van Hove singularities ...
Zusammenfassung
A microscopic theory for the coupling of intrinsic Josephson oscillations in layered superconductors with longitudinal c-axis phonons is developed, it is shown that the influence of lattice vibrations on the c-axis transport can be fully described by introducing an effective longitudinal dielectric function epsilon(ph)(L)(w). Resonances in the I-V characteristic appear at van Hove singularities of both acoustical and optical longitudinal phonon branches. This provides a natural explanation of the recently discovered subgap structures in the I-V characteristic of highly anisotropic cuprate superconductors. The effect of the phonon dispersion on the damping of these resonances and the coupling of Josephson oscillations in different resistive junctions due to phonons are discussed in detail.
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