Institut Néel, CNRS and Université Joseph Fourier, B.P. 166, 38042 Grenoble Cedex 09, France.
Phys Rev Lett. 2013 Jul 19;111(3):037203. doi: 10.1103/PhysRevLett.111.037203. Epub 2013 Jul 17.
We present the electrical readout of time trajectories obtained from an isolated nuclear spin. The device, a TbPc(2) single-molecule magnet spin transistor, detects the four different nuclear spin states of the Tb(3+) ion with fidelities better than 69%, allowing us to measure individual relaxation times (T(1)) of several tens of seconds. A good agreement with quantum Monte Carlo simulations suggests that the relaxation times are limited by the current tunneling through the transistor, which opens up the possibility to tune T(1) electrically by means of bias and gate voltages.
我们展示了从孤立核自旋中获得的时间轨迹的电读出。该器件是一个 TbPc(2)单分子磁体自旋晶体管，它可以以超过 69%的保真度检测到 Tb(3+)离子的四个不同核自旋态，从而使我们能够测量数十秒的单个弛豫时间 (T(1))。与量子蒙特卡罗模拟的良好一致性表明，弛豫时间受通过晶体管的电流隧穿限制，这为通过偏压和栅压电调 T(1)开辟了可能性。
