Deep subwavelength surface modes in metal-dielectric metamaterials.
We present what we believe to be the first study of deep subwavelength surface modes in binary metal-dielectric metamaterials. By employing anomalous coupling in binary periodicity, peculiar properties of band structure and eigenmode symmetry are obtained. We show that strongly confined plasmonic Tamm-like and Shockley-like surface modes can be formed at the termination of the array. We clarify the character of each surface mode and analyze its unique symmetry with the corresponding band structure.
NSF Nanoscale Science and Engineering Center (NSEC), 3112 Etcheverry Hall,University of California, Berkeley, California 94720-1740, USA.
Sung
S
Hyun Nam
Erick
E
Ulin-Avila
Guy
G
Bartal
Xiang
X
Zhang