期刊
APPLIED PHYSICS LETTERS
卷 83, 期 21, 页码 4303-4305出版社
AMER INST PHYSICS
DOI: 10.1063/1.1630152
关键词
-
We have directly measured the low-energy (0.5-3 meV) complex optical spectra of magnetoresistive La2-2xSr1+2xMn2O7 (x=0.3) thin films by using THz time-domain spectroscopy. a-axis oriented thin films of La2-2xSr1+2xMn2O7 (x=0.3) were epitaxially grown on MgO(100) substrates by pulsed laser deposition technique. The films showed paramagnetic insulator to ferromagnetic metal transition at 240 K. In the ferromagnetic metallic phase, we found that the real part of the optical conductivity spectrum exhibits a clear gap signature around 2 meV, which infringes the Drude-like behavior as expected from the electronic and magnetic properties. This provides an optical identification of a pseudogap in La2-2xSr1+2xMn2O7 (x=0.3). (C) 2003 American Institute of Physics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据