Josephson Plasma Excitation and Vortex Oscillation Mode in Josephson Vortes State

Abstract

The Josephson plasma resonance has been investigated in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ single crystals in parallel magnetic fields to the $ab$-plane. We found two resonance modes; one appears at higher frequency in high fields above the plasma frequency ${\omega }_p$ at zero field and absolute zero, and the other lies below ${\omega }_p$ and is observed only in magnetic fields without considerable field dependence. Two resonance lines were also found in numerical simulations in a single junction model with randomness of the critical current. The higher frequency mode is attributed to the Josephson plasma mode modified by the periodic structure of Josephson vortices, while the lower frequency mode is interpreted as oscillations of Josephson vortices.

Submitted to Proceedings of ISS 2001, Kobe, Japan

References in corpus (3)

• Plasma resonance and remaining Josephson coupling in the ``decoupled vortex liquid phase'' in layered superconductors
• Collective Dynamics of Josephson Vortices in Intrinsic Josephson Junctions :Exploration of In-phase Locked Superradiant Vortex Flow States
• Resonances, instabilities, and structure selection of driven Josephson lattice in layered superconductors

Cited by in corpus (4)

• Decoupled two-dimensional superconductivity and continuous melting transitions in layered superconductors immersed in a parallel magnetic field
• New Josephson Plasma Modes in Underdoped YBa2Cu3O6.6 Induced by Parallel Magnetic Field
• The origin of flux-flow resistance oscillations in BiSrCaCuO: Fiske steps in a single junction?
• Two Phase Collective Modes in Josephson Vortex Lattice in Intrinsic Josephson Junction Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$