Collective Josephson Plasma Resonance in the Vortex State of Bi2Sr2CaCu2O8+δ
Year: 1995
Type: article
Abstract: We have measured the microwave surface resistance (30-60 GHz) for different crystallographic orientations in the vortex state of ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}\mathrm{Ca}{\mathrm{Cu}}_{2}{\mathrm{O}}_{8+\ensuremath{\delta}}$. A sharp magnetoabsorption resonance is observed below ${T}_{c}$ when ac electric fields and magnetic fields are applied parallel to the $c$ axis (${E}_{\mathrm{ac}}\ensuremath{\parallel}B\ensuremath{\parallel}c$). We argue that the observed resonance arises from collective Josephson plasma oscillations generated by interlayer Josephson currents. From the frequency and temperature dependence of the resonance, we discuss the interlayer phase coherence in the vortex liquid and solid states quantitatively.
Source: Physical Review Letters
Institutions: Hokkaido University, National Institute for Materials Science
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1666577833