Applied Physics Letters, vol. 99, no. 18, 2011-10-31
Japanese Journal of Applied Physics, vol. 50, no. 8, 2011-08
PHYSICAL REVIEW LETTERS, vol. 107, no. 1, 2011-06-30
Nano Letters, vol. 11, no. 5, page. 1913 - 1918, 2011-05