kang jpDM Jang, K Park, DH Kim, J Park, F Shojaei, HS Kang, JP Ahn, JW Lee, ... Nano letters 15 (8), 5191-5199, 2015. 519: 2015: X-ray photoelectron spectroscopy and first principles calculationDM Jang, K Park, DH Kim, J Park, F Shojaei, HS Kang, JP Ahn, JW Lee, ... Nano letters 15 (8), 5191-5199, 2015. 519: 2015: X-ray photoelectron spectroscopy and first principles calculation