THz emission from a Bi2Sr2CaCu2O8+δ cross-whisker junction.

Autor: Saito, Yoshito, Adachi, Shintaro, Matsumoto, Ryo, Nagao, Masanori, Fujita, Shuma, Hayama, Ken, Terashima, Kensei, Takeya, Hiroyuki, Kakeya, Itsuhiro, Takano, Yoshihiko
Zdroj: Applied Physics Express; 2/15/2021, Vol. 14 Issue 3, p1-4, 4p
Abstrakt: Cuprate superconductor Bi2Sr2CaCu2O8+δ (BSCCO) has been a promising candidate of a coherent, continuous, and compact THz light source owing to its intrinsic Josephson junction (IJJ) inside the crystal structure. In this paper, we utilized BSCCO cross-whisker (CW) junctions to produce THz emitter device using the whisker crystals which can be easily obtained compared with single crystals. As a result, we have successfully observed the emission from the CW IJJ at the frequency of ∼0.7 THz, which is the first observation of a THz emission from whiskers to our knowledge. Our findings would enlarge the applicability of BSCCO superconductors for compact THz emission sources. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index