Persistent Conductivity in n-Type 3C-SiC Observed at Low Temperatures
Persistent conductivity in n-type 3C-SiC is investigated in a wide temperature range down to 3 K by Hall effect, admittance spectroscopy, low temperature photoluminescence (LTPL) and Raman spectroscopy. We propose a model, which clearly explains the persistent behavior of the electron density n below 50 K. It is experimentally verified that the persistent conductivity results from doped SF bunches, which can be considered as nanopolytype inclusions in 3C-SiC.
Hajime Okumura, Hiroshi Harima, Prof. Tsunenobu Kimoto, Masahiro Yoshimoto, Heiji Watanabe, Tomoaki Hatayama, Hideharu Matsuura, Tsuyoshi Funaki and Yasuhisa Sano
S. Beljakowa et al., "Persistent Conductivity in n-Type 3C-SiC Observed at Low Temperatures", Materials Science Forum, Vols. 778-780, pp. 265-268, 2014