Electronic Structure of Co2MnSn Heusler Alloy

The electronic structure of Co2MnSn Heusler alloy has been investigated by using resonant photoemission spectroscopy across the 3p-3d transition of Mn and Co. Angle dispersive X-ray diffraction pattern corroborates with the valence band photoemission spectra and confirms a conventional L2(1) structure for this system. In addition to Mn and Co 3p-3d transitions, the constant initial-state spectra shows two more features related to the multiplet structure of Mn and the small impurity phase of Co, which is confirmed by the diffraction data. Theoretical first principle calculation is performed to understand the features in the valence band and the shape of the resonance profile.