The 77th JSAP Autumn Meeting, 2016

Presentation information

Print

Oral presentation

11 Superconductivity » 11.4 Analog applications and their related technologies

[14p-D61-1~20] 11.4 Analog applications and their related technologies

Wed. Sep 14, 2016 1:15 PM - 7:00 PM D61 (Bandaijima Bldg.)

Toshihiko Kiwa(Okayama Univ.), Shigehito Miki(NICT), Tohru Taino(Saitama Univ.)

5:15 PM - 5:30 PM

[14p-D61-14] Tc improvement of the NbN ultra-thin films by the MgO+CaO mixed buffer layer

〇Akira Kawakami1, Kazumasa Makise1, Yoshinori Uzawa1 (1.NICT)

Keywords:CaO, NbN ultra-thin film, HEB

For improvement of the performance of the superconducting hot electron bolometer, we tried to improve the superconducting transition temperature (Tc) of NbN ultra-thin films of 4 nm thickness by using buffer layer. As the buffer layer, the MgO and CaO mixed films of 7.2 nm thickness were used. By using the buffer layer, Tc of NbN ultra-thin films increased about 0.7 K, and Tc of NbN of 3 nm thickness showed 11.5 K.