Abstract

Recently, thermal switching has been extensively studied because it is a key component for thermal management in electronic devices. Here, we show a huge magneto-thermal-switching ratio (MTSR) in pure Nb at temperatures lower than its superconducting transition temperature (T c = 9.2 K). The MTSR increases with decreasing temperature, and an MTSR of 650% was observed at T = 2.5 K under H = 4.0 kOe. Thermal switching in superconductors with a huge MTSR will be useful for the improvement of the performance of low-temperature electronic devices.

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