Imaging collective magnonic modes in 2D arrays of magnetic nanoelements.
We have used time resolved scanning Kerr microscopy to image collective spin wave modes within a 2D array of magnetic nanoelements. Long wavelength spin waves are confined within the array as if it was a continuous element of the same size but with effective material properties determined by the structure of the array and its constituent nanoelements. The array is an example of a magnonic metamaterial, the demonstration of which provides new opportunities within the emerging field of magnonics.
Kruglyak
V V
VV
School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, United Kingdom. V.V.Kruglyak@exeter.ac.uk
Keatley
P S
PS
Neudert
A
A
Hicken
R J
RJ
Childress
J R
JR
Katine
J A
JA