Nonlinear heat transport in ferromagnetic-quantum dot-superconducting systems

Hwang, S.-Y.; Sánchez, D.
Journal of Physics: Conference Series 969, 012139 (1-6) (2018)

We analyze the heat current traversing a quantum dot sandwiched between a ferromagnetic and a superconducting electrode. The heat flow generated in response to a voltage bias presents rectification as a function of the gate potential applied to the quantum dot. Remarkably, in the thermally driven case the heat shows a strong diode effect with large asymmetry ratios that can be externally tuned with magnetic fields or spin-polarized tunneling. Our results thus demonstrate the importance of hybrid systems as promising candidates for thermal applications.

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