Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films

N. Awari; S. Kovalev; C. Fowley; K. Rode; R. A. Gallardo; Y. C. Lau; D. Betto; N. Thiyagarajah; B. Green; O. Yildirim; J. Lindner; J. Fassbender; J. M.D. Coey; A. M. Deac; M. Gensch

doi:10.1063/1.4958855

Narrow-band tunable terahertz emission from ferrimagnetic Mn_3-xGa thin films

N. Awari, S. Kovalev, C. Fowley, K. Rode, R. A. Gallardo, Y. C. Lau, D. Betto, N. Thiyagarajah, B. Green, O. Yildirim, J. Lindner, J. Fassbender, J. M.D. Coey, A. M. Deac, M. Gensch

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36 Citations (Scopus)

Abstract

Narrow-band terahertz emission from coherently excited spin precession in metallic ferrimagnetic Mn_3-xGa Heusler alloy nanofilms has been observed. The efficiency of the emission, per nanometer film thickness, is comparable or higher than that of classical laser-driven terahertz sources based on optical rectification. The center frequency of the emission from the films can be tuned precisely via the film composition in the range of 0.20-0.35 THz, making this type of metallic film a candidate for efficient on-chip terahertz emitters. Terahertz emission spectroscopy is furthermore shown to be a sensitive probe of magnetic properties of ultra-thin films.

Original language	English
Article number	032403
Journal	Applied Physics Letters
Volume	109
Issue number	3
DOIs	https://doi.org/10.1063/1.4958855
Publication status	Published - 2016 Jul 18
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4958855

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title = "Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films",

abstract = "Narrow-band terahertz emission from coherently excited spin precession in metallic ferrimagnetic Mn3-xGa Heusler alloy nanofilms has been observed. The efficiency of the emission, per nanometer film thickness, is comparable or higher than that of classical laser-driven terahertz sources based on optical rectification. The center frequency of the emission from the films can be tuned precisely via the film composition in the range of 0.20-0.35 THz, making this type of metallic film a candidate for efficient on-chip terahertz emitters. Terahertz emission spectroscopy is furthermore shown to be a sensitive probe of magnetic properties of ultra-thin films.",

author = "N. Awari and S. Kovalev and C. Fowley and K. Rode and Gallardo, {R. A.} and Lau, {Y. C.} and D. Betto and N. Thiyagarajah and B. Green and O. Yildirim and J. Lindner and J. Fassbender and Coey, {J. M.D.} and Deac, {A. M.} and M. Gensch",

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day = "18",

doi = "10.1063/1.4958855",

language = "English",

volume = "109",

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T1 - Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films

AU - Awari, N.

AU - Kovalev, S.

AU - Fowley, C.

AU - Rode, K.

AU - Gallardo, R. A.

AU - Lau, Y. C.

AU - Betto, D.

AU - Thiyagarajah, N.

AU - Green, B.

AU - Yildirim, O.

AU - Lindner, J.

AU - Fassbender, J.

AU - Coey, J. M.D.

AU - Deac, A. M.

AU - Gensch, M.

PY - 2016/7/18

Y1 - 2016/7/18

N2 - Narrow-band terahertz emission from coherently excited spin precession in metallic ferrimagnetic Mn3-xGa Heusler alloy nanofilms has been observed. The efficiency of the emission, per nanometer film thickness, is comparable or higher than that of classical laser-driven terahertz sources based on optical rectification. The center frequency of the emission from the films can be tuned precisely via the film composition in the range of 0.20-0.35 THz, making this type of metallic film a candidate for efficient on-chip terahertz emitters. Terahertz emission spectroscopy is furthermore shown to be a sensitive probe of magnetic properties of ultra-thin films.

AB - Narrow-band terahertz emission from coherently excited spin precession in metallic ferrimagnetic Mn3-xGa Heusler alloy nanofilms has been observed. The efficiency of the emission, per nanometer film thickness, is comparable or higher than that of classical laser-driven terahertz sources based on optical rectification. The center frequency of the emission from the films can be tuned precisely via the film composition in the range of 0.20-0.35 THz, making this type of metallic film a candidate for efficient on-chip terahertz emitters. Terahertz emission spectroscopy is furthermore shown to be a sensitive probe of magnetic properties of ultra-thin films.

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DO - 10.1063/1.4958855

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

M1 - 032403

ER -

Narrow-band tunable terahertz emission from ferrimagnetic Mn_3-xGa thin films

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