Optically detected electron-nuclear double resonance of the S=1 excited state of the PGa-YP defect in GaP: The neighboring 31P and 69Ga and 71Ga shells.
Optically detected electron-nuclear double resonance of the S=1 excited state of the PGa-YP defect in GaP: The neighboring 31P and 69Ga and 71Ga shells.
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光学检测到 GaP 中 PGa-YP 缺陷的 S=1 激发态的电子-核双共振：邻近的 31P 以及 69Ga 和 71Ga 壳层。
DOI：
10.1103/physrevb.50.10619
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Watkins
中科院分区：
文献类型：
--
作者：
Sun;Rong;Watkins
电子核双共振 (ODENDOR) 的光学检测用于研究生长的 p 型 GaP 中磷反位相关缺陷的 1.1-eV 光致发光。我们确定观察到的 ODENDOR 光谱来自自旋 S=1 激发态系统的 ${\mathit{M}}_{\mathit{S}}$=0 状态，其中不存在一阶磁超精细贡献。尽管如此，包括通过矩阵对角化的高阶效应，为中心 P 以及 P 和 Ga 邻居的几个壳层提取了超精细相互作用，确认缺陷具有 ${\mathrm{P}}_{\mathrm{Ga}}$-${\mathit{Y}}_{\mathrm{P}}$ 结构，其中 ${\mathit{Y}}_{\mathrm{P}}$ 表示杂质或空位在最近邻的 P 站点。在 Ga 邻居的情况下，一阶电四极相互作用存在于 ${\mathit{M}}_{\mathit{S}}$=0 流形中，并用于区分三个邻居壳。缺陷的激发态波函数是高度局部化的，基本上所有缺陷都在第一个最近的 P 壳层内。没有观察到可归因于 ${\mathit{Y}}_{\mathrm{P}}$ 的 ODENDOR 信号，并且其身份仍未确定。
Optical detection of electron-nuclear double resonance (ODENDOR) is used to investigate the 1.1-eV photoluminescence of a phosphorus-antisite-related defect in as-grown p-type GaP. We establish that the observed ODENDOR spectra arise from the ${\mathit{M}}_{\mathit{S}}$=0 state of a spin S=1 excited-state system in which there are no first-order magnetic hyperfine contributions. Nevertheless, including higher-order effects via matrix diagonalization, hyperfine interactions are extracted for the central P and several shells of both P and Ga neighbors, confirming that the defect has a ${\mathrm{P}}_{\mathrm{Ga}}$-${\mathit{Y}}_{\mathrm{P}}$ structure, where ${\mathit{Y}}_{\mathrm{P}}$ denotes an impurity or vacancy at a nearest-neighbor P site. In the case of the Ga neighbors, first-order electric quadrupole interactions are present in the ${\mathit{M}}_{\mathit{S}}$=0 manifold and serve to distinguish the three neighbor shells. The excited-state wave function of the defect is highly localized, essentially all of it accounted for within the first-nearest P shell. No ODENDOR signals are observed that can be attributed to ${\mathit{Y}}_{\mathrm{P}}$, and its identity remains undetermined.