Abstract
The magneto-optical Kerr effect is a striking phenomenon whereby the optical properties of a material change under an applied magnetic field. Though promising for sensing and data storage technology, these properties are typically weak in magnitude and are inherently limited by the bulk properties of the active magnetic material. In this work, we theoretically demonstrate that plasmonic thin-film assemblies on a cobalt substrate can achieve tunable transverse magneto-optical (TMOKE) responses throughout the visible and near-infrared (300-900 nm). In addition to exhibiting wide spectral tunability, this response can be varied in sign and magnitude by changing the plasmonic volume fraction (1-20%), the composition and arrangement of the assembly, and the shape of the nanoparticle inclusions. Of particular interest is the newly discovered sensitivity of the sign and intensity of the TMOKE spectrum to collective metallic plasmonic behavior in silver, mixed silver-gold, and anisotropic superlattices.
| Original language | English |
|---|---|
| Pages (from-to) | 4732-4738 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry Letters |
| Volume | 7 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - Nov 17 2016 |
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ASJC Scopus subject areas
- Materials Science(all)
Cite this
Magneto-Optical Response of Cobalt Interacting with Plasmonic Nanoparticle Superlattices. / Ross, Michael B.; Bourgeois, Marc R.; Mirkin, Chad A.; Schatz, George C.
In: Journal of Physical Chemistry Letters, Vol. 7, No. 22, 17.11.2016, p. 4732-4738.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magneto-Optical Response of Cobalt Interacting with Plasmonic Nanoparticle Superlattices
AU - Ross, Michael B.
AU - Bourgeois, Marc R.
AU - Mirkin, Chad A.
AU - Schatz, George C
PY - 2016/11/17
Y1 - 2016/11/17
N2 - The magneto-optical Kerr effect is a striking phenomenon whereby the optical properties of a material change under an applied magnetic field. Though promising for sensing and data storage technology, these properties are typically weak in magnitude and are inherently limited by the bulk properties of the active magnetic material. In this work, we theoretically demonstrate that plasmonic thin-film assemblies on a cobalt substrate can achieve tunable transverse magneto-optical (TMOKE) responses throughout the visible and near-infrared (300-900 nm). In addition to exhibiting wide spectral tunability, this response can be varied in sign and magnitude by changing the plasmonic volume fraction (1-20%), the composition and arrangement of the assembly, and the shape of the nanoparticle inclusions. Of particular interest is the newly discovered sensitivity of the sign and intensity of the TMOKE spectrum to collective metallic plasmonic behavior in silver, mixed silver-gold, and anisotropic superlattices.
AB - The magneto-optical Kerr effect is a striking phenomenon whereby the optical properties of a material change under an applied magnetic field. Though promising for sensing and data storage technology, these properties are typically weak in magnitude and are inherently limited by the bulk properties of the active magnetic material. In this work, we theoretically demonstrate that plasmonic thin-film assemblies on a cobalt substrate can achieve tunable transverse magneto-optical (TMOKE) responses throughout the visible and near-infrared (300-900 nm). In addition to exhibiting wide spectral tunability, this response can be varied in sign and magnitude by changing the plasmonic volume fraction (1-20%), the composition and arrangement of the assembly, and the shape of the nanoparticle inclusions. Of particular interest is the newly discovered sensitivity of the sign and intensity of the TMOKE spectrum to collective metallic plasmonic behavior in silver, mixed silver-gold, and anisotropic superlattices.
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U2 - 10.1021/acs.jpclett.6b02259
DO - 10.1021/acs.jpclett.6b02259
M3 - Article
VL - 7
SP - 4732
EP - 4738
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
SN - 1948-7185
IS - 22
ER -