[8p-A24-1~6] 11.1 Fundamental properties

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[8p-A24-1] Modulation of superconducting properties via built-in strain in Nb thin film

〇Yushin Takahashi¹, Kohono Ryuhei², Okubo Katsutoshi², Makino Noriko², Nomura Hikaru^2,3, Chiba Daichi^2,4,5,6,7 (1.Tohoku Univ., 2.SRIS, Tohoku Univ., 3.NIMS, 4.SANKEN, The Univ. of Osaka, 5.CSRN, The Univ. of Osaka, 6.OTRI, The Univ. of Osaka, 7.CSIS, Tohoku Univ.)

Keywords:

Superconductivity,Nb,strain

The "built-in strain method," which involves depositing a thin film onto a stretchable flexible substrate while applying a tensile strain into the substrate, and then removing the strain after deposition to obtain a thin film with compressive strain, has recently attracted attention. In this study, we fabricated Nb thin films by sputtering technique with such built-in compressive strain embedded, and observed a decrease in transition temperature of 0.6K with a strain of 0.53%. This presentation will discuss the details and the presumed physical origin of this finding.