APPLIED PHYSICS LETTERS

XU F, DAS S, GONG Y, LIU Q, CHIEN HC, CHIU HY, WU J, HUI R

APPLIED PHYSICS LETTERS

WANG WH, NAN HY, LIU Q, LIANG Z, YU ZH, LIU FY, HU WD, ZHANG W, WANG XR, NI ZH