Spectral, temperature, and magnetic field dependences of the magneto-optical transversal Kerr effect (TKE) as well as optical properties of (In,Mn)As samples prepared by ion implantation followed by pulsed laser melting were studied, and a strong TKE response was detected at low temperatures. The presence of a characteristic structure in the TKE spectra in the transition region around the Λ point of the InAs band structure confirms the intrinsic nature of observed ferromagnetism. The TKE temperature dependences recorded in different spectral regions exhibit nonmonotonous behavior, indicating magnetic inhomogeneity of the samples studied. The character of the TKE magnetic field dependences also confirms the presence of magnetic inhomogeneity in the samples.

中文翻译：

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(In-Mn)As层磁光光谱中的磁不均匀性表现


研究了磁光横向克尔效应 (TKE) 的光谱、温度和磁场依赖性以及通过离子注入和脉冲激光熔化制备的 (In,Mn)As 样品的光学性质，并得到了强烈的 TKE 响应在低温下检测到。 InAs 能带结构 Λ 点周围过渡区域的 TKE 光谱中特征结构的存在证实了所观察到的铁磁性的内在本质。在不同光谱区域记录的 TKE 温度依赖性表现出非单调行为，表明所研究样品的磁不均匀性。 TKE 磁场依赖性的特征也证实了样品中存在磁不均匀性。