矢量磁场中表面上单个原子的自旋共振振幅和频率
Spin Resonance Amplitude and Frequency of a Single Atom on a Surface in a Vector Magnetic Field
摘要：
我们用电子自旋共振（ESR）结合扫描隧道显微镜（STM）测量了矢量磁场中MgO表面低对称结合位上的氢化Ti（自旋-1/2）原子。我们发现强烈的各向异性g值在所有三个空间方向。有趣的是，ESR信号的幅度和线形也强烈依赖于场的角度。我们的结论是，Ti自旋沿磁场排列，而尖端自旋遵循其强磁各向异性。我们的结果显示了在决定ESR信号时，尖端和表面自旋之间的相互作用，并突出了ESR-STM识别单个原子自旋态的精度。
英文摘要：
We used electron spin resonance (ESR) combined with scanning tunneling microscopy (STM) to measure hydrogenated Ti (spin-1/2) atoms at low-symmetry binding sites on MgO in vector magnetic fields. We found strongly anisotropic g-values in all three spatial directions. Interestingly, the amplitude and lineshape of the ESR signals are also strongly dependent on the angle of the field. We conclude that the Ti spin is aligned along the magnetic field, while the tip spin follows its strong magnetic anisotropy. Our results show the interplay between the tip and surface spins in determining the ESR signals and highlight the precision of ESR-STM to identify the single atom's spin states.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
