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electrical detection of cross relaxation between electron spins of phosphorus and oxygen-vacancy centers in silicon

机译:电检测磷的电子自旋与硅中的氧空位中心之间的交叉弛豫

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摘要

We report on the electrical detection of cross relaxation (EDCR) processes in phosphorus-doped /-irradiated silicon, where the dipolar-coupled electron spins of phosphorus and oxygen-vacancy complex (Si-SLl center) undergo spin flip-flop transitions at specific magnetic field values for which the Zeeman splitting of the two centers become equal. Such cross relaxation signals are observed as the change in the sample photoconductivity at theoretically predicted magnetic fields without application of resonance frequency. This EDCR is a very simple and sensitive method for detecting paramagnetic centers in semiconductors.
机译:我们报告了在掺磷/辐照硅中的交叉弛豫(EDCR)过程的电学检测,其中磷和氧空位络合物(Si-SLl中心)的偶极耦合电子自旋在特定温度下经历自旋触发器转变磁场值,两个中心的塞曼分裂变为相等。在不施加共振频率的情况下,观察到这种交叉弛豫信号是在理论上预测的磁场下样品光电导率的变化。 EDCR是一种非常简单而灵敏的方法,用于检测半导体中的顺磁中心。

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