High- T c superconducting THz emitters fabricated by wet etching

Yuuki Shibano, Takanari Kashiwagi, Yuki Komori, Kazuki Sakamoto, Yuki Tanabe, Takashi Yamamoto, Hidetoshi Minami, Richard A. Klemm, Kazuo Kadowaki

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
90 Downloads (Pure)

Abstract

We studied the etching of small crystals of the high-Tc superconductor Bi2Sr2CaCu2O8+δ (Bi2212) with various dilute compositions of hydrochloric and nitric acids. A particular mixture of those acids was chosen to simultaneously fabricate multiple rectangular stand-alone Bi2212 mesa structures from a large, doubly-cleaved and doubly metallic-coated single crystal. The radiation characteristics of these devices were found to be very similar to stand-alone devices fabricated previously using dry-etching techniques. The greatly reduced time and cost of fabrication of stand-alone Bi2212 devices using our wet-etching technique should facilitate the mass production of a large number of identical stand-alone devices from a large single-crystalline Bi2212 substrate.

Original languageEnglish
Article number015116
Number of pages8
JournalAIP Advances
Volume9
Issue number1
DOIs
Publication statusPublished - 2019

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