Dynamic Control of Temperature Distributions in Stacks of Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+δ for Intense Terahertz Radiation
M. Tsujimoto, H. Kambara, Y. Maeda, Y. Yoshioka, Y. Nakagawa, I. Kakeya
DOI 10.1103/PhysRevApplied.2.044016 · Physical Review Applied
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study the universal relationship between the hot-spot size and the intensity of terahertz emission from intrinsic Josephson junctions by dynamically controlling the temperature distributions in mesas of Bi2Sr2CaCu2O8+δ. The uniform current bias leads to a significant increase in local temperature compared to the nonuniform current bias. The thermal response of emission differs between the high- and low-bias regimes. We find a strong positive correlation between the emission intensity and the volume of the superconducting parts in the emitting stack. We identify the remarkable increase in the emission intensity by up to 20% by eliminating the excess Joule heat from the mesa.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 78 | Pressure not reported | unknown |
Similar papers
Interaction of hot spots and terahertz waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks of various geometry
similarity 0.98S. Guénon et al.
Source status unknown — claims are unverified
Terahertz Spectroscopy of Dilute Gases Using Bi2Sr2CaCu2O8+δ Intrinsic Josephson-Junction Stacks
similarity 0.97Hancong Sun et al.
Source status unknown — claims are unverified
Terahertz emission from mutually synchronized standalone Bi2Sr2CaCu2O8+x intrinsic-Josephson-junction stacks
similarity 0.97Raphael Wieland et al.
Source status unknown — claims are unverified
Coherent generation of phonon-polaritons in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions
similarity 0.97Sven-Olof Katterwe et al.
Source status unknown — claims are unverified
Superluminal geometrical resonances observed in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions
similarity 0.96S. O. Katterwe et al.
Source status unknown — claims are unverified
Hot-spot formation in stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8
similarity 0.96B. Gross et al.
Source status unknown — claims are unverified