PHYSICAL REVIEW B, vol. 80, no. 7, page. 73104, 2009-08
PHYSICAL REVIEW B, vol. 80, no. 3, 2009-07
PHYSICAL REVIEW LETTERS, vol. 102, no. 25, page. 256404, 2009-06-26
JOURNAL OF APPLIED PHYSICS, vol. 105, no. 7, 2009-04-01
PHYSICAL REVIEW LETTERS, vol. 102, no. 7, 2009-02-20
JOURNAL OF APPLIED PHYSICS, vol. 103, no. 7, 2008-04-01
JOURNAL OF APPLIED PHYSICS, vol. 101, no. 9, 2007-05-01
JOURNAL OF PHYSICS-CONDENSED MATTER, vol. 18, no. 31, page. 7227 - 7236, 2006-08-09
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 48, no. 4, page. 599 - 602, 2006-04
PHYSICAL REVIEW B, vol. 73, no. 13, 2006-04
PHYSICA B-CONDENSED MATTER, vol. 328, no. 1-2, page. 148 - 150, 2003-04