Datta-Das transistor for atomtronic circuits using artificial gauge fields

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.

9 pages, 4 figures

References in corpus (6)

• Non-Abelian gauge potentials for ultra-cold atoms with degenerate dark states
• All-electric all-semiconductor spin field effect transistors
• Cold atom dynamics in non-Abelian gauge fields
• Spin Field Effect Transistors with Ultracold Atoms
• Experimental demonstration of an atomtronic battery
• Atomtronic Matter-Wave Optics