09:45 〜 10:00 [F-5-04] Pregrowth treatment induced below-bandgap states in GaAs ○R.C.I. Roca1, K. Fukui1, H. Mizuno1, M. Suzuki1, I. Kamiya1 (1.Toyota Tech. Inst. (Japan)) https://doi.org/10.7567/SSDM.2019.F-5-04