PHYSICAL REVIEW LETTERS, vol. 114, no. 11, 2015-03-19
PHYSICAL REVIEW LETTERS, vol. 114, no. 13, page. 136401-1 - 136401-5, 2015-03-31
Physical Review Letters, vol. 110, no. 1, page. 17401, 2013-01
PHYSICAL REVIEW LETTERS, vol. 104, no. 3, 2010-01-22
PHYSICAL REVIEW LETTERS, vol. 107, no. 24, 2011-12-07
APPLIED PHYSICS LETTERS, vol. 101, no. 15, page. 152103, 2012-10-08
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 52, no. 6, page. 1814 - 1817, 2008-06
JOURNAL OF PHYSICS-CONDENSED MATTER, vol. 23, no. 25, page. 256001, 2011-06-29