Abstract
Emission of THz electromagnetic waves from thin samples of intrinsic Josephson junctions (IJJ's) is numerically studied, using the xz-model. We show that the spatial symmetry of the electromagnetic excitations corresponding to the π-cavity mode is different from that of the 2π-cavity mode in the IJJ's where the junction parameters such as the Josephson critical current are weakly inhomogeneous. In such IJJ's the emission in the [0 0 1] direction, which is forbidden in the dipole emission, appears at the π-cavity mode resonance, whereas it is not observed in the 2π-cavity mode resonance. It is also shown that the strong emission occurs when the transition between branches in the I-V characteristics takes place.
Original language | English |
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Pages (from-to) | 1202-1205 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its applications |
Volume | 471 |
Issue number | 21-22 |
DOIs | |
Publication status | Published - 2011 Nov |
Keywords
- Intrinsic Josephson junctions
- THz emission
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering