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arXiv · 2203.13360

Datta-Das transistor for atomtronic circuits using artificial gauge fields

Chetan Sriram Madasu·Mehedi Hasan·Ketan D. Rathod·Chang Chi Kwong·David Wilkowski
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Abstract

Spin-dependent electrical injection has found useful applications in storage devices, but fully operational spin-dependent semiconductor electronics remain a challenging task because of weak spin-orbit couplings and/or strong spin relaxations. These limitations are lifted considering atoms instead of electrons or holes as spin carriers. In this emerging field of atomtronics, we demonstrate the equivalent of a Datta-Das transistor using a degenerate Fermi gas of strontium atoms as spin carriers in interaction with a tripod laser-beams scheme. We explore the dependence of spin rotation, and we identify two key control parameters which we interpret as equivalent to the gate-source and drain-source voltages of a field effect transistor. Our finding broadens the spectrum of atomtronics devices for implementation of operational spin-sensitive circuits.

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Chetan Sriram Madasu, Mehedi Hasan, Ketan D. Rathod, Chang Chi Kwong, David Wilkowski. 2022-03-18. Datta-Das transistor for atomtronic circuits using artificial gauge fields. https://doi.org/10.1103/physrevresearch.4.033180

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