Indexed by: Journal paper

First Author: P Zheng

Correspondence Author: JL Luo

Co-author: Yi-feng Yang,FK Lin,JL Lv,G Xu,W Wu,P Wang,YJ Xu

Journal: Scientific Reports

Included Journals: SCI

Discipline: 物理学

Document Type: J

Volume: 7

Issue: 1

Page Number: 14178

ISSN No.: 2045-2322

Date of Publication: 2017-10-27

Impact Factor: 4.122

Abstract: 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.