Evidence for direct and indirect gap in FeSi from electron tunneling spectroscopy

Autor: Baťková, M., Baťko, I., Mihalik, M.
Rok vydání: 2020
Předmět:
Zdroj: Volume 141, Issue 7, February 2007, Pages 412-415
Druh dokumentu: Working Paper
DOI: 10.1016/j.ssc.2006.11.014
Popis: We report electron tunneling spectroscopy studies on single crystalline FeSi sample performed for the case of homogeneous tunnel junction contacts and for the case of counter electrodes made from Pt-Rh alloy. Our results reveal that while the tunneling spectroscopy in the configuration with Pt-Rh tip is preferably sensitive to the d-partial density of states and to the indirect energy gap, the FeSi-FeSi type of tunnel junction yields spectroscopic information on the c-partial density of states and on the direct gap in FeSi.
Databáze: arXiv