Electronic Structure Examination on the Topological Properties of CaMnSb$_{2}$ by Angle-Resolved Photoemission Spectroscopy

摘要: We have carried out detailed high resolution ARPES measurements and band structure calculations to study the electronic of CaMnSb$_{2}$. The observed Fermi surface mainly consists one hole pocket around ${\Gamma}$ point tiny at Y point. Strong spectral weight accumulation along ${\Gamma}$-X direction is on hole-like point, suggesting strong anisotropy density states surface. originates from an anisotropic Dirac-like with crossing linear bands lying $\sim$ 10 meV above level. These observations are in a good agreement calculations. In addition, we observe additional features ${\Gamma}$-Y line that cannot be accounted for by Our results provide important information understanding exploration novel properties CaMnSb$_{2}$ related materials.