Applied Physics Letters, vol. 99, no. 19, 2011-11-07
Physical Review B, vol. 80, no. 3, 2009-07
Journal of Applied Physics, vol. 106, no. 4, 2009-08-15
Physical Review B, vol. 87, no. 6, 2013-02-13
Physical Review Letters, vol. 107, no. 11, 2011-09-09
Applied Physics Express, vol. 1, no. 9, 2008-09