Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 79, Issue 2, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.79.023703
Keywords
THz radiation; THz emitters; intrinsic Josephson junctions; Josephson plasma; Bi2Sr2CaCu2O8+delta single crystals; ac-Josephson effect; high-T-c superconductors; continuous THz sources
Categories
Funding
- CREST-JST (Japan Science and Technology Agency)
- WPI (World Prernier International Research Center Initiative)
- MANA (Materials Nanoarchitechtonics)
- NIMS
- Strategic Initiative category
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The THz radiation emitted from rectangular mesas of single-crystal Bi2Sr2CaCu2O8+delta was studied using angular distribution measurements and Fourier transform infrared spectroscopy. Unlike the recent theoretical predictions, the results provide strong, evidence for a dual-source mechanism in which the uniform and non-uniform parts of the ac-Josephson Current act as electric and magnetic Current Sources, respectively. The latter synchronizes with cavity modes of the mesa with integral harmonics of the fundamental radiation.
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