Compact Model of a Topological Transistor

Md Mazharul Islam; Shamiul Alam; Md Shafayat Hossain; Ahmedullah Aziz

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arXiv · 2210.03874

Compact Model of a Topological Transistor

Md Mazharul Islam·Shamiul Alam·Md Shafayat Hossain·Ahmedullah Aziz

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Abstract

The precession of a ferromagnet leads to the injection of spin current and heat into an adjacent non-magnetic material. Besides, spin-orbit entanglement causes an additional charge current injection. Such a device has been recently proposed where a quantum-spin hall insulator (QSHI) in proximity to a ferromagnetic insulator (FI) and superconductor (SC) leads to the pumping of charge, spin, and heat. Here we build a circuit-compatible Verilog-A-based compact model for the QSHI-FI-SC device capable of generating two topologically robust modes enabling the device operation. Our model also captures the dependence on the ferromagnetic precision, drain voltage, and temperature with an excellent (> 99%) accuracy.

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Md Mazharul Islam, Shamiul Alam, Md Shafayat Hossain, Ahmedullah Aziz. 2022-10-08. Compact Model of a Topological Transistor. https://arxiv.org/abs/2210.03874

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