High- T <sub>c</sub> superconducting THz emitters fabricated by wet etching

Journal article (2019)

Authors

Yuuki Shibano University of Tsukuba
Takanari Kashiwagi University of Tsukuba
Yuki Komori University of Tsukuba
Kazuki Sakamoto University of Tsukuba
Yuki Tanabe University of Tsukuba
T. Yamamoto QuTech Advanced Research Centre, Quantum Internet Division
Hidetoshi Minami University of Tsukuba
Richard A. Klemm University of Central Florida
Kazuo Kadowaki University of Tsukuba
Affiliation
QuTech Advanced Research Centre
Copyright: © 2019 Yuuki Shibano, Takanari Kashiwagi, Yuki Komori, Kazuki Sakamoto, Yuki Tanabe, T. Yamamoto, Hidetoshi Minami, Richard A. Klemm, Kazuo Kadowaki
DOI
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https://doi.org/10.1063/1.5061682
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Published Date

2019

Language

English

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Affiliation

QuTech Advanced Research Centre

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.

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