Abstract
We report spatial localization of the effective magnetic field generated via the inverse Faraday effect employing surface plasmon polaritons (SPPs) at Au/garnet interface. Analyzing both numerically and analytically the electric field of the SPPs at this interface, we corroborate our study with a proof-of-concept experiment showing efficient SPP-driven excitation of coherent spin precession with 0.41 THz frequency. We argue that the subdiffractional confinement of the SPP electric field enables strong spatial localization of the SPP-mediated excitation of spin dynamics. We demonstrate two orders of magnitude enhancement of the excitation efficiency at the surface plasmon resonance within a 100 nm layer of a dielectric garnet. Our findings broaden the horizons of ultrafast spin-plasmonics and open pathways toward nonthermal opto-magnetic recording on the nanoscale.
| Original language | English |
|---|---|
| Pages (from-to) | 2970-2975 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 18 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 9 2018 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
Cite this
Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics. / Chekhov, Alexander L.; Stognij, Alexander I.; Satoh, Takuya; Murzina, Tatiana V.; Razdolski, Ilya; Stupakiewicz, Andrzej.
In: Nano Letters, Vol. 18, No. 5, 09.05.2018, p. 2970-2975.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics
AU - Chekhov, Alexander L.
AU - Stognij, Alexander I.
AU - Satoh, Takuya
AU - Murzina, Tatiana V.
AU - Razdolski, Ilya
AU - Stupakiewicz, Andrzej
PY - 2018/5/9
Y1 - 2018/5/9
N2 - We report spatial localization of the effective magnetic field generated via the inverse Faraday effect employing surface plasmon polaritons (SPPs) at Au/garnet interface. Analyzing both numerically and analytically the electric field of the SPPs at this interface, we corroborate our study with a proof-of-concept experiment showing efficient SPP-driven excitation of coherent spin precession with 0.41 THz frequency. We argue that the subdiffractional confinement of the SPP electric field enables strong spatial localization of the SPP-mediated excitation of spin dynamics. We demonstrate two orders of magnitude enhancement of the excitation efficiency at the surface plasmon resonance within a 100 nm layer of a dielectric garnet. Our findings broaden the horizons of ultrafast spin-plasmonics and open pathways toward nonthermal opto-magnetic recording on the nanoscale.
AB - We report spatial localization of the effective magnetic field generated via the inverse Faraday effect employing surface plasmon polaritons (SPPs) at Au/garnet interface. Analyzing both numerically and analytically the electric field of the SPPs at this interface, we corroborate our study with a proof-of-concept experiment showing efficient SPP-driven excitation of coherent spin precession with 0.41 THz frequency. We argue that the subdiffractional confinement of the SPP electric field enables strong spatial localization of the SPP-mediated excitation of spin dynamics. We demonstrate two orders of magnitude enhancement of the excitation efficiency at the surface plasmon resonance within a 100 nm layer of a dielectric garnet. Our findings broaden the horizons of ultrafast spin-plasmonics and open pathways toward nonthermal opto-magnetic recording on the nanoscale.
UR - http://www.scopus.com/inward/record.url?scp=85046675157&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046675157&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.8b00416
DO - 10.1021/acs.nanolett.8b00416
M3 - Article
C2 - 29641902
AN - SCOPUS:85046675157
VL - 18
SP - 2970
EP - 2975
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 5
ER -