Disentangling orbital and spin textures of surface-derived states in non-symmorphic semimetal HfSiS

This work was financially supported by KAKENHI (Grants No. 17H06138, No. 17H06152, and No. 18H03683). The experiments were performed with the approval of the Proposal Assessing Committee of HSRC (Proposals No. 18AG038, No. 17BG029, No. 17BG028). K. Sumida and T. Yoshikawa were financially supported by the Grant-in-Aid for JSPS Fellows No. 19J00858 and No. 18J22309, respectively. M. Novak and F. Orbanic acknowledge the ´ support of the Croatian Science Foundation under the project (IP-2018-01-8912) and CeNIKS project cofinanced by the Croatian Government and the EU through the European Regional Development Fund - Competitiveness and Cohesion Operational Programme (Grant No. KK.01.1.1.02.0013). We acknowledge the support by the Basque Departamento de Educacion, UPV/EHU (Grant No. IT-756-13), Spanish Ministerio de Economia y Competitividad (MINECO Grant No. FIS2016-75862-P), Fundamental Research Program of the State Academies of Sciences, line of research III.23, and Academic D. I. Mendeleev Fund Program of Tomsk State University (Project No. 8.1.01.2018). The support by the Saint Petersburg State University for scientific investigations (Grant ID 40990069) and Russian Foundation for Basic Research – RFBR (Project No. 18-52-06009) are also acknowledged. T. V. Menshchikova acknowledges support by the Ministry of Education and Science of the Russian Federation within the framework of the governmental program Megagrants (State Task No. 3.8716.2017/P220 [3.8716.2017/9.10]).