APPLIED PHYSICS LETTERS
LEE JE, SHARMA BK, LEE SK, JEON H, HONG BH, LEE HJ, AHN JH
NANOSCALE
NA HK, KIM MH, LEE J, KIM YK, JANG H, LEE KE, PARK H, HEO WD, JEON H, CHOI IS, LEE Y, MIN DH