Terahertz wave emission and phase motion in intrinsic Josephson junctions

H. Matsumoto, T. Koyama, M. Machida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Since the observation of the terahertz wave emission from the intrinsic Josephson junction of Bi2Sr2Ca-Cu2O 8, there have been a lot of arguments on properties of emitted electromagnetic waves. The difficulty in the theoretical analysis to identify the relation between the phase motion and emitted waves lies in the fact that there are more than hundred-times different length scales, the Josephson vortex size and wavelength of terahertz waves. We investigate, by numerical simulation, the relation between emitted electromagnetic waves and phase motions by use of a reduced model where the system of the junctions is approximated by the periodic system and couples to the electromagnetic fields in the vacuum with a large length scale. Due to the oscillatory Josephson current, the emitted wave shows a similar pattern as the dipole emission.

Original languageEnglish
Pages (from-to)1485-1488
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number20
DOIs
Publication statusPublished - 2010 Nov 1

Keywords

  • Intrinsic Josephson junction
  • THz wave emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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