论文标题
使用人造轨迹场的Atomtronic电路的Datta-DAS晶体管
Datta-Das transistor for atomtronic circuits using artificial gauge fields
论文作者
论文摘要
旋转依赖性电入发现在存储设备中发现了有用的应用，但是由于较弱的自旋轨道耦合和/或强烈的自旋松弛，完全依赖于自旋的半导体电子设备仍然是一项艰巨的任务。考虑原子而不是电子或孔作为自旋载体，这些局限性被取消。在这一新兴的原子化领域中，我们使用跨原子的简化费米气体作为旋转载体，与三脚架激光束方案相互作用，证明了达塔-DAS晶体管的等效物。我们探索自旋旋转的依赖性，并确定了两个关键控制参数，我们将其解释为等同于磁场效应晶体管的栅极和排水源电压。我们的发现扩大了用于实施操作自旋敏感电路的原子型设备的范围。
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.
