APPLIED PHYSICS LETTERS

HE MD, WANG KJ, WANG L, LI JB, LIU JQ, HUANG ZR, WANG LL, WANG L, HU WD, CHEN XS

APPLIED PHYSICS LETTERS

SHEN JZ, XING HZ, WANG L, HU Z, ZHANG LB, WANG XY, CHEN ZQZ, YAO CY, JIANG MJ, FEI FC, CHEN G, HAN L, SONG FQ, CHEN XS