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Anisotropies in the linear polarization of vacancy photoluminescence in diamond induced by crystal rotations and strong magnetic fields
Physical Review B ( IF 3.7 ) Pub Date : 2018-03-21 00:00:00 , DOI: 10.1103/physrevb.97.125426
D. Braukmann , V. P. Popov , E. R. Glaser , T. A. Kennedy , M. Bayer , J. Debus

We study the linear polarization properties of the photoluminescence of ensembles of neutral and negatively charged nitrogen vacancies and neutral vacancies in diamond crystals as a function of their symmetry and their response to strong external magnetic fields. The linear polarization degree, which exceeds 10% at room temperature, and rotation of the polarization plane of their zero-phonon lines significantly depend on the crystal rotation around specific axes demonstrating anisotropic angular evolutions. The sign of the polarization plane rotation is changed periodically through the crystal rotation, which indicates a switching between electron excited states of orthogonal linear polarizations. At external magnetic fields of up to 10 T, the angular dependencies of the linear polarization degree experience a remarkable phase shift. Moreover, the rotation of the linear polarization plane increases linearly with rising magnetic field at 6 K and room temperature, for the negatively charged nitrogen vacancies, which is attributed to magneto-optical Faraday rotation.

中文翻译:

晶体旋转和强磁场在金刚石中空位光致发光的线性极化中的各向异性

我们研究了金刚石晶体中的中性和带负电的氮空位和中性空位的集合体的光致发光的线性偏振特性,作为其对称性及其对强外部磁场的响应的函数。线性极化度(在室温下超过10%)及其零声子线的极化平面的旋转很大程度上取决于晶体围绕特定轴的旋转,从而证明了各向异性的角度演化。极化平面旋转的符号通过晶体旋转而周期性地改变,这表明在正交线性极化的电子激发态之间的切换。在高达10 T的外部磁场下,线性极化度的角度相关性会经历明显的相移。而且,
更新日期:2018-03-21
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