论文类型：期刊论文
第一作者：P Zheng
通讯作者：JL Luo
合写作者：Yi-feng Yang,FK Lin,JL Lv,G Xu,W Wu,P Wang,YJ Xu
发表刊物：Scientific Reports
收录刊物：SCI
学科门类：物理学
文献类型：J
卷号：7
期号：1
页面范围：14178
ISSN号：2045-2322
发表时间：2017-10-27
影响因子：4.122
摘要：Unconventional superconductivity often emerges at the border of long-range magnetic orders. Understanding the low-energy charge dynamics may provide crucial information on the formation of superconductivity. Here we report the unpolarized/polarized optical conductivity study of high quality MnP single crystals at ambient pressure. Our data reveal two types of charge carriers with very different lifetimes. In combination with the first-principles calculations, we show that the short-lifetime carriers have flat Fermi sheets which become gapped in the helimagnetic phase, causing a dramatic change in the low-frequency optical spectra, while the long-lifetime carriers are anisotropic three-dimensional like which are little affected by the magnetic transitions and provide major contributions to the transport properties. This orbital-dependent charge dynamics originates from the special crystal structure of MnP and may have an influence on the unconventional superconductivity and its interplay with helimagnetism at high pressures.