Kashiwagi, T. et al. (2015) Efficient fabrication of intrinsic-Josephson-junction terahertz oscillators with greatly reduced self-heating effects. Physical Review Applied, 4(5), 054018. (doi: 10.1103/PhysRevApplied.4.054018)
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Abstract
The intrinsic Josephson junctions (IJJs) in the high- T c superconductor Bi 2 Sr 2 CaCu 2 O 8 + δ (Bi2212) are shown to have great potential for the construction of an oscillator emitting in the terahertz-frequency f regime. However, earlier devices with Bi2212 substrates exhibit strong self-heating effects detrimental to their operation and limiting the maximum f to approximately 1 THz. Here we describe an efficient fabrication procedure for a stand-alone-mesa IJJ terahertz oscillator with considerably reduced self-heating effects, greatly expanding the tunability and maximum value of f , potentially even to 15 THz. Their typical current-voltage characteristics, radiation tunability and power, and some practical uses are also presented.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Delfanazari, Dr Kaveh |
| Authors: | Kashiwagi, T., Yamamoto, T., Minami, H., Tsujimoto, M., Yoshizaki, R., Delfanazari, K., Kitamura, T., Watanabe, C., Nakade, K., Yasui, T., Asanuma, K., Saiwai, Y., Shibano, Y., Enomoto, T., Kubo, H., Sakamoto, K., Katsuragawa, T., Marković, B., Mirković, J., Klemm, R. A., and Kadowaki, K. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physical Review Applied |
| Publisher: | American Physical Society |
| ISSN: | 2331-7019 |
| Published Online: | 30 November 2015 |
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