论文标题
单分子磁铁中的$π$ radical在空间上解析电子旋转共振
Spatially Resolving Electron Spin Resonance of $π$-Radical in Single-molecule Magnet
论文作者
论文摘要
磁分子的自旋特性吸引了大量的科学关注。特别重点已放在量子信息处理上。单分子磁铁Bis（苯甲酸（PC））TB（III）（TBPC2）是最佳检查的情况之一，其中PC配体的DELACALIZEDICALIDICEπ-RADICAL ELECTOR SPIN在读取和中间局部TB旋转qubit中起关键作用。我们利用了在扫描隧道显微镜（STM）上实现的电子自旋共振（ESR）技术，并使用它测量了2个单层NaCl膜从Cu（100）底物解耦的单个TBPC2分子的局部ESR，以识别π-Radical Spin。我们在S = 1/2旋转的共振条件下检测到配体位置处的ESR信号。结果表明，在配体内部将π-Radical电子被脱落，并表现出对化学环境敏感的分子内耦合。
The spintronic properties of magnetic molecules have attracted significant scientific attention. Special emphasis has been placed on the qubit for quantum information processing. The single molecule magnet, bis(phthalocyaninato (Pc)) Tb(III) (TbPc2), is one of the best examined cases in which the delocalized π-radical electron spin of the Pc ligand plays the key role in reading and intermediating the localized Tb spin qubits. We utilized the electron spin resonance (ESR) technique implemented on scanning tunneling microscope (STM) and use it to measure local ESR of single TbPc2 molecule decoupled from the Cu(100) substrate by 2 monolayers NaCl film to identify the π-radical spin. We detected the ESR signal at the ligand positions at the resonance condition expected for the S = 1/2 spin. The results reveal that the π-radical electron is delocalized within the ligands and exhibits intramolecular coupling susceptible to the chemical environment.
