透明 EuTiO 薄膜：一种可能的二维磁光器件。

Transparent EuTiO films: a possible two-dimensional magneto-optical device.

机构信息

Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany.

Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland.

出版信息

Sci Rep. 2017 Jan 13;7:40621. doi: 10.1038/srep40621.

DOI:10.1038/srep40621

PMID:28084444

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5234035/

Abstract

The magneto-optical activity of high quality transparent thin films of insulating EuTiO (ETO) deposited on a thin SrTiO (STO) substrate, both being non-magnetic materials, are demonstrated to be a versatile tool for light modulation. The operating temperature is close to room temperature and allows for multiple device engineering. By using small magnetic fields birefringence of the samples can be switched off and on. Similarly, rotation of the sample in the field can modify its birefringence Δn. In addition, Δn can be increased by a factor of 4 in very modest fields with simultaneously enhancing the operating temperature by almost 100 K.

摘要

高质量透明绝缘 EuTiO（ETO）薄膜的磁光活性，其沉积在 SrTiO（STO）衬底上，这两种材料都是非磁性材料，被证明是一种用于光调制的多功能工具。工作温度接近室温，允许进行多种器件工程。通过使用小磁场，可以打开和关闭样品的双折射。同样，在磁场中旋转样品可以改变其双折射Δn。此外，在非常小的磁场中，Δn 可以增加 4 倍，同时将工作温度提高近 100 K。