| Title: |
Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder |
| Authors: |
Rani, Poonam, Murakami, Takumi, Watanabe, Yuto, Sepehri-Amin, Hossein, Arima, Hiroto, Yamashita, Aichi, Mizuguchi, Yoshikazu |
| Source: |
Appl. Phys. Express 18 033001 (2025) |
| Publication Year: |
2024 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Superconductivity, Condensed Matter - Materials Science |
| More Details: |
Magneto-thermal switching (MTS) is a key technology for efficient thermal management. Recently, large MTS with nonvolatility has been observed in Sn-Pb solders [H. Arima et al., Commun. Mater. 5, 34 (2024)] where phase separation, different superconducting transition temperature (Tc) of Sn and Pb, and magnetic-flux trapping are the causes of the nonvolatile MTS. To further understand the mechanism and to obtain the strategy for enhancing switching ratio, exploration of new phase-separated superconductors with nonvolatile MTS is needed. Here, we show that the In52-Sn48 commercial solder is a phase-separated superconducting composite with two Tc and traps vortices after field cooling. A clear signature of nonvolatile MTS was observed at T = 2.5 K. From specific heat analyses, we conclude that the vortices are mainly trapped in the lower-Tc phase ({\gamma}-phase) after field cooling, which is the evidence that vortex trapping also works on achieving nonvolatile MTS in phase-separated superconducting composites.
Comment: 14 pages, 5 figures |
| Document Type: |
Working Paper |
| DOI: |
10.35848/1882-0786/adb6ee |
| Access URL: |
http://arxiv.org/abs/2408.14824 |
| Accession Number: |
edsarx.2408.14824 |
| Database: |
arXiv |
