Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2510.00341 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908571445231616 |
|---|---|
| author | Rani, Poonam Mashiko, Masayuki Hirata, Keisuke Uchida, Ken-ichi Mizuguchi, Yoshikazu |
| author_facet | Rani, Poonam Mashiko, Masayuki Hirata, Keisuke Uchida, Ken-ichi Mizuguchi, Yoshikazu |
| contents | Thermal diode is a growing technology and important for active thermal flow control. Since the theoretical designing of thermal diode in 2004, various kinds of solid-state thermal diodes have been theoretically and experimentally investigated. Here, we report on the observation of thermal rectification in bulk-size superconductor-normal metal junctions. High-purity (5N) wires of Pb and Al are soldered, and thermal conductivity (\k{appa}) of the junctions is measured in two different directions of the heat flow, forward (\k{appa}F) and reverse (\k{appa}R) directions. Thermal rectification ratio (\k{appa}F / \k{appa}R) of 1.75 is obtained at T ~ 5.2 K with H = 400 Oe. The merit of the Pb-Al junction is a large difference of \k{appa} in an order of several hundred W m-1 K-1 and magneto-tunability of the working temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_00341 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magneto-Tunable Thermal Diode Based on Bulk Superconductor Rani, Poonam Mashiko, Masayuki Hirata, Keisuke Uchida, Ken-ichi Mizuguchi, Yoshikazu Superconductivity Thermal diode is a growing technology and important for active thermal flow control. Since the theoretical designing of thermal diode in 2004, various kinds of solid-state thermal diodes have been theoretically and experimentally investigated. Here, we report on the observation of thermal rectification in bulk-size superconductor-normal metal junctions. High-purity (5N) wires of Pb and Al are soldered, and thermal conductivity (\k{appa}) of the junctions is measured in two different directions of the heat flow, forward (\k{appa}F) and reverse (\k{appa}R) directions. Thermal rectification ratio (\k{appa}F / \k{appa}R) of 1.75 is obtained at T ~ 5.2 K with H = 400 Oe. The merit of the Pb-Al junction is a large difference of \k{appa} in an order of several hundred W m-1 K-1 and magneto-tunability of the working temperature. |
| title | Magneto-Tunable Thermal Diode Based on Bulk Superconductor |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2510.00341 |