电荷有序化和无序化对磁电阻Pr0.7Ca0.3MnO3薄膜太赫兹辐射特性的影响。

Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films.

作者信息

Kida Noriaki, Takahashi Kouhei, Tonouchi Masayoshi

机构信息

Research Center for Superconductor Photonics, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.

出版信息

Opt Lett. 2004 Nov 1;29(21):2554-6. doi: 10.1364/ol.29.002554.

DOI:10.1364/ol.29.002554

PMID:15584292

Abstract

Terahertz (THz) radiation from voltage-biased photoswitching devices made on magnetoresistive manganite Pr0.7Ca0.3MnO3 have been investigated for thin films grown under different conditions. We find that the temperature dependence of THz radiation near the charge-ordering temperature strongly depends on the growth condition of Pr0.7Ca0.3MnO3, whereas THz radiation shows no such temperature dependence near the spin-ordering temperature.

摘要

已对在磁阻锰酸盐Pr0.7Ca0.3MnO3上制作的电压偏置光开关器件发出的太赫兹（THz）辐射进行了研究，该研究针对在不同条件下生长的薄膜。我们发现，在电荷有序温度附近，太赫兹辐射的温度依赖性强烈依赖于Pr0.7Ca0.3MnO3的生长条件，而在自旋有序温度附近，太赫兹辐射没有这种温度依赖性。