PHYSICAL REVIEW B
GAO Q, LI XP, LI M, WANG TX, HUANG XW, ZHANG QM, LI JB, JIA Y, XIA CX
ACS NANO
WU D, GUO JW, DU J, XIA CX, ZENG LH, TIAN YZ, SHI ZF, TIAN YT, LI XJ, TSANG YH, JIE JS