Nature Communications, vol. 6, 2015-09
SCIENTIFIC REPORTS, vol. 5, 2015-03-04
JOURNAL OF PHYSICS D-APPLIED PHYSICS, vol. 46, no. 49, page. 494006 - 494018, 2013-12-11
AIP Advances, vol. 3, no. 9, page. 92127-1 - 92127-8, 2013-09
Physical Review Letters, vol. 110, no. 2, 2013-01-11