Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics

Alexander L. Chekhov; Alexander I. Stognij; Takuya Satoh; Tatiana V. Murzina; Ilya Razdolski; Andrzej Stupakiewicz

doi:10.1021/acs.nanolett.8b00416

Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics

Alexander L. Chekhov, Alexander I. Stognij, Takuya Satoh, Tatiana V. Murzina, Ilya Razdolski, Andrzej Stupakiewicz

Condensed Matter Physics

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

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	https://doi.org/10.1021/acs.nanolett.8b00416
Publication status	Published - May 9 2018

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

Access to Document

10.1021/acs.nanolett.8b00416

Fingerprint Dive into the research topics of 'Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics'. Together they form a unique fingerprint.

Cite this

@article{51e0448409e3494ea7d1a8def3cfbc36,

title = "Surface Plasmon-Mediated Nanoscale Localization of Laser-Driven sub-Terahertz Spin Dynamics in Magnetic Dielectrics",

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.",

author = "Chekhov, {Alexander L.} and Stognij, {Alexander I.} and Takuya Satoh and Murzina, {Tatiana V.} and Ilya Razdolski and Andrzej Stupakiewicz",

year = "2018",

month = may,

day = "9",

doi = "10.1021/acs.nanolett.8b00416",

language = "English",

volume = "18",

pages = "2970--2975",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "5",

}

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 -