论文标题
在最佳掺杂的LA $ _ {2-x} $ sr $ _ {x} $ cuo $ _4 $中观察回旋共振和孔质量的测量
Observation of cyclotron resonance and measurement of the hole mass in optimally-doped La$_{2-x}$Sr$_{x}$CuO$_4$
论文作者
论文摘要
使用最高31吨的脉冲磁场中的时间域Terahertz光谱法，我们在高温超导粉末的最佳掺杂薄膜中测量Terahertz的光电电导率，la $ _ {1.84} $ _ {1.84} $ sr $ _ {0.16} $ cuo $ $ _4 $ $ _4 $。我们观察到圆形偏振复合光电率的系统变化，这些变化与p型电荷载流子的感受器的吸收一致，其特征在于$ 4.9 \ pm 0.8 $ $ $ $ m _ {\ rm e} $的循环质量质量，以及随着磁场而增加的散射速率。这些结果为旨在表征电子电子相互作用影响铜酸盐超导体的载体质量的程度的研究打开了大门。
Using time-domain terahertz spectroscopy in pulsed magnetic fields up to 31 T, we measure the terahertz optical conductivity in an optimally-doped thin film of the high temperature superconducting cuprate La$_{1.84}$Sr$_{0.16}$CuO$_4$. We observe systematic changes in the circularly-polarized complex optical conductivity that are consistent with cyclotron absorption of p-type charge carriers characterized by a cyclotron mass of $4.9\pm 0.8$ $m_{\rm e}$, and a scattering rate that increases with magnetic field. These results open the door to studies aimed at characterizing the degree to which electron-electron interactions influence carrier masses in cuprate superconductors.
