Coupling between phonons and intrinsic Josephson oscillations in cuprate superconductors

Abstract

The recently reported subgap structures observed in the current-voltage characteristic of intrinsic Josephson junctions in the high-T_c superconductors Tl_2Ba_2Ca_2Cu_3O_{10+δ} and Bi_2Sr_2CaCu_2O_{8+δ} 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.

4 pages, 3 figures, revtex, aps, epsf, psfig. submitted to Physical Review Letters, second version improved in detail

Cited by in corpus (22)

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• Correlation between the Josephson coupling energy and the condensation energy in bilayer cuprate superconductors
• Systematics of c-axis Phonons in the Thallium and Bismuth Based Cuprate Superconductors
• Effect of coupling on scheme of hysteresis jumps in current-voltage characteristics of intrinsic Josephson junctions in high- superconductors
• Static Charge Coupling of Intrinsic Josephson Junction
• Theory for the coupling between longitudinal phonons and intrinsic Josephson oscillations in layered superconductors
• Progressive evolution of tunneling characteristics of in-situ fabricated intrinsic Josephson junctions in Bi_2Sr_2CaCu_2O_{8+delta} single crystals
• Decoupling of a Current-Biased Intrinsic Josephson Junction from its Environment
• Intrinsic Tunneling in Cuprates and Manganites
• Phonons in intrinsic Josephson systems with parallel magnetic field
• Switching current distributions and subgap structures of underdoped (Hg,Re)Ba2Ca2Cu3O8+d intrinsic Josephson junctions
• Subgap structures in the current-voltage characteristic of the intrinsic Josephson effect due to phonons
• Phonon-Josephson resonances in atomtronic circuits
• Sub-terahertz sound excitation and detection by long Josephson junction
• Long Josephson Junction in a Resonant Cavity
• Effects of Resonant Cavity on Macroscopic Quantum Tunneling of Fluxon in Long Josephson Junctions
• Microscopic theory of the coupling of intrinsic Josephson oscillations and phonons
• Interpretation of a microwave induced current step in a single intrinsic Josephson junction on a Bi-2223 thin film
• Voltage-biased I-V characteristics in the multi-Josephson junction model of high T${}_c$ superconductor
• Dissipation in Josephson tunneling junctions at low temperatures