APPLIED PHYSICS LETTERS

HASS J, FENG R, LI T, LI X, ZONG Z, DE HEER WA, FIRST PN, CONRAD EH, JEFFREY CA, BERGER C

SCIENCE

BERGER C, SONG ZM, LI XB, WU XS, BROWN N, NAUD C, MAYOU D, LI TB, HASS J, MARCHENKOV AN, CONRAD EH, FIRST PN, DE HEER WA