Effects of Photon-Momentum and Magnetic-Field Reversal on the Far-Infrared Electric-Dipole Spin Resonance in InSb
Effects of Photon-Momentum and Magnetic-Field Reversal on the Far-Infrared Electric-Dipole Spin Resonance in InSb
复制标题
光子动量和磁场反转对InSb中远红外电偶极子自旋共振的影响
DOI：
10.1103/physrevlett.51.134
复制
发表时间：
1983
影响因子：
8.6
通讯作者：
S. Rodriguez
中科院分区：
文献类型：
--
作者：
M. Dobrowolska;Yang;J. Furdyna;S. Rodriguez
在平行Voigt几何（E→∥B→⊥k→）中对n型InSb进行的远红外磁透射实验最终证明，由于缺乏反演对称性，这种材料中导电电子和供体束缚电子的电偶极子激发自旋共振（EDSR）是允许的。出乎意料的是，对于这种几何结构，EDSR光谱也显示出对B→或k→符号的异常依赖。通过时间逆对称性论证表明，上述行为表示光子动量对介电响应函数的显式贡献。
Far-infrared magnetotransmission experiments on n-type InSb in the parallel Voigt geometry (E→∥ B→⊥ k→) conclusively demonstrate that the electric-dipole-excited spin resonance (EDSR) of conduction and donor-bound electrons in this material is allowed through lack of inversion symmetry. Quite unexpectedly for this geometry, the EDSR spectra also reveal an anomalous dependence on the sign of either B→ or k→. It is shown, through time-reversal-symmetry arguments, that the above behavior represents an explicit contribution of the photon momentum to the dielectric response function.