(Color online) properties. (a) Real part of dielectric function in its metallic and semiconducting state. Data has been extracted from Ref. 5 . (b) Hysteresis loop of 50 nm of the electron beam evaporated film on ITO-covered glass used to modulate the spectral location of PIT in dolmen structures.
(Color online) Structure exhibiting a plasmonic analogue of PIT. (a) Theoretical shape of PIT transmission spectrum. (b) Plasmon mode hybridization diagram for the dolmen structure. The bright dipole mode excited by the incident light couples to the dark quadrupole mode, and this coupling forms bonding (open circle) and antibonding states at lower and higher energies, respectively. The state exhibiting the plasmonic analogue of PIT (filled circle) is between the bonding and antibonding states. Adapted from Ref. 10 . (c) FDTD simulated 2D electric near field map from the structure comprised of gold with a 16 nm gap measured outside the transparency window at 776 nm (open circle) and within the transparency window at 907 nm (filled circle). Light is incident perpendicular to the structure and polarized parallel to the dipole.
(Color online) Fabrication process and resulting nanostructures. (a) Fabrication of composite nanostructures, consisting of (1) EBE and annealing of followed by (2,3) EBL on spin coated PMMA, (4) PMMA development, (5) gold evaporation, and (6) liftoff of the PMMA and residual gold. (b) Fabricated structures consisting of 40 nm gold structures on top of 50 nm of EBE and annealed on an ITO-covered glass substrate.
(Color online) Experimental and simulated white light transmission from Au nanostructures on ITO-covered glass sample. (a) Transmission spectra for dolmens with a 16–18 nm gap and light polarized parallel to the dipole. (b) Transmission spectra for dolmens with a 69 nm gap, which is large enough that the bright and dark modes cannot couple. (c) Transmission spectra with incoming light polarized parallel to the quadrupole.
(Color online) White light transmission from Au dolmens on a film when the is in the semiconducting phase and in the metallic phase. A 100 nm blueshift of the location of the left half of the characteristic PIT transmission spectrum from the dolmen structures is seen as the is heated and undergoes its phase transition.
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