论文标题
与底物振动耦合的单个Fe Adatom的自旋 - 浮肿的显微镜理论
Microscopic theory of spin-relaxation of a single Fe adatom coupled to substrate vibrations
论文作者
论文摘要
了解单个ADATOM的自旋 - - 闪烁机制是创建原子磁记忆位甚至量子位的重要步骤。在这里，我们通过将\ textIt {ab-initio}的电子和振动特性与原子态的多体性质相结合，提出了一种本质上无参数的理论。我们的计算说明了最近在MGO/AG（100）上测量的Fe Atatoms测得的毫秒旋转寿命，并重现了对去耦层和外部磁场数量的依赖性。我们展示了如何调整与环境的原子相互作用以增强磁稳定性，并提出了一个清晰的指纹，用于实验检测局部旋转旋转激发。
Understanding the spin-relaxation mechanism of single adatoms is an essential step towards creating atomic magnetic memory bits or even qubits. Here we present an essentially parameter-free theory by combining \textit{ab-initio} electronic and vibrational properties with the many-body nature of atomic states. Our calculations account for the millisecond spin lifetime measured recently on Fe adatoms on MgO/Ag(100) and reproduce the dependence on the number of decoupling layers and the external magnetic field. We show how the atomic interaction with the environment should be tuned in order to enhance the magnetic stability, and propose a clear fingerprint for experimentally detecting a localized spin-phonon excitation.
