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职称:讲师

性别:男

学科:凝聚态物理

学位:博士

所在单位:数理学院

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Orbital-dependent charge dynamics in MnP revealed by optical study

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DOI码:10.1038/s41598-017-14648-7

发表刊物:Scientific Reports

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.

论文类型:期刊论文

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发表时间:2017-01-01

发布期刊链接:https://www.nature.com/articles/s41598-017-14648-7