Bi2Se3 interlayer treatments affecting the Y3Fe5O12 (YIG) platinum spin Seebeck effect
Bi2Se3 interlayer treatments affecting the Y3Fe5O12 (YIG) platinum spin Seebeck effect
In this work, we present a method to enhance the longitudinal spin Seebeck effect at platinum/yttrium iron garnet (Pt/YIG) interfaces. The introduction of a partial interlayer of bismuth selenide (Bi2Se3, 2.5% surface coverage) interfaces significantly increases (by ∼380%–690%) the spin Seebeck coefficient over equivalent Pt/YIG control devices. Optimal devices are prepared by transferring Bi2Se3 nanoribbons, prepared under anaerobic conditions, onto the YIG (111) chips followed by rapid over-coating with Pt. The deposited Pt/Bi2Se3 nanoribbon/YIG assembly is characterized by scanning electron microscope. The expected elemental compositions of Bi2Se3 and YIG are confirmed by energy dispersive x-ray analysis. A spin Seebeck coefficient of 0.34–0.62 μV/K for Pt/Bi2Se3/YIG is attained for our devices, compared to just 0.09 μV/K for Pt/YIG controls at a 12 K thermal gradient and a magnetic field swept from −50 to +50 mT. Superconducting quantum interference device magnetometer studies indicate that the magnetic moment of Pt/Bi2Se3/YIG treated chips is increased by ∼4% vs control Pt/YIG chips (i.e., a significant increase vs the ±0.06% chip mass reproducibility). Increased surface magnetization is also detected in magnetic force microscope studies of Pt/Bi2Se3/YIG, suggesting that the enhancement of spin injection is associated with the presence of Bi2Se3 nanoribbons.
223902-1-223902-6
Hu, Yaoyang
3760793b-acc4-4369-8777-2dd94feedcc2
Weir, Michael P.
bf8c569b-2690-44cd-814f-3059e1dfe7cc
Pereira, H. Jessica
99b16ebd-fa9f-41f0-a4fe-f0c0e22f6697
Amin, Oliver J.
bbb328c0-a3ca-4e77-ad50-8a71e73809f1
Pitcairn, Jem
fe559150-9ab5-4e2e-82b4-7799bb01d407
Cliffe, Matthew J.
a70c6043-edaa-4039-9c29-24211848b57c
Rushforth, Andrew W.
0b35a205-d5cc-4f24-96f4-3ec130fa4dfb
Kunakova, Gunta
571b2bf1-1a8e-4bb4-ad44-6933b33d07c5
Niherysh, Kiryl
3b1c2616-2857-4067-9ab7-d96a1aa5fefa
Korolkov, Vladimir
79260db8-1e87-4e0e-8706-847e01f10431
Kertfoot, James
63f56ebf-0db7-4f5b-81da-33f5b74aab79
Makarovsky, Oleg
735f6951-de11-4f0b-b7f2-9299462a0843
Woodward, Simon
d3889574-e24e-412d-b4cf-8b882548a6dd
27 November 2023
Hu, Yaoyang
3760793b-acc4-4369-8777-2dd94feedcc2
Weir, Michael P.
bf8c569b-2690-44cd-814f-3059e1dfe7cc
Pereira, H. Jessica
99b16ebd-fa9f-41f0-a4fe-f0c0e22f6697
Amin, Oliver J.
bbb328c0-a3ca-4e77-ad50-8a71e73809f1
Pitcairn, Jem
fe559150-9ab5-4e2e-82b4-7799bb01d407
Cliffe, Matthew J.
a70c6043-edaa-4039-9c29-24211848b57c
Rushforth, Andrew W.
0b35a205-d5cc-4f24-96f4-3ec130fa4dfb
Kunakova, Gunta
571b2bf1-1a8e-4bb4-ad44-6933b33d07c5
Niherysh, Kiryl
3b1c2616-2857-4067-9ab7-d96a1aa5fefa
Korolkov, Vladimir
79260db8-1e87-4e0e-8706-847e01f10431
Kertfoot, James
63f56ebf-0db7-4f5b-81da-33f5b74aab79
Makarovsky, Oleg
735f6951-de11-4f0b-b7f2-9299462a0843
Woodward, Simon
d3889574-e24e-412d-b4cf-8b882548a6dd
Hu, Yaoyang, Weir, Michael P., Pereira, H. Jessica, Amin, Oliver J., Pitcairn, Jem, Cliffe, Matthew J., Rushforth, Andrew W., Kunakova, Gunta, Niherysh, Kiryl, Korolkov, Vladimir, Kertfoot, James, Makarovsky, Oleg and Woodward, Simon
(2023)
Bi2Se3 interlayer treatments affecting the Y3Fe5O12 (YIG) platinum spin Seebeck effect.
Applied Physics Letters, 123 (22), , [223902].
(doi:10.1063/5.0157778).
Abstract
In this work, we present a method to enhance the longitudinal spin Seebeck effect at platinum/yttrium iron garnet (Pt/YIG) interfaces. The introduction of a partial interlayer of bismuth selenide (Bi2Se3, 2.5% surface coverage) interfaces significantly increases (by ∼380%–690%) the spin Seebeck coefficient over equivalent Pt/YIG control devices. Optimal devices are prepared by transferring Bi2Se3 nanoribbons, prepared under anaerobic conditions, onto the YIG (111) chips followed by rapid over-coating with Pt. The deposited Pt/Bi2Se3 nanoribbon/YIG assembly is characterized by scanning electron microscope. The expected elemental compositions of Bi2Se3 and YIG are confirmed by energy dispersive x-ray analysis. A spin Seebeck coefficient of 0.34–0.62 μV/K for Pt/Bi2Se3/YIG is attained for our devices, compared to just 0.09 μV/K for Pt/YIG controls at a 12 K thermal gradient and a magnetic field swept from −50 to +50 mT. Superconducting quantum interference device magnetometer studies indicate that the magnetic moment of Pt/Bi2Se3/YIG treated chips is increased by ∼4% vs control Pt/YIG chips (i.e., a significant increase vs the ±0.06% chip mass reproducibility). Increased surface magnetization is also detected in magnetic force microscope studies of Pt/Bi2Se3/YIG, suggesting that the enhancement of spin injection is associated with the presence of Bi2Se3 nanoribbons.
Text
223902_1_5.0157778
- Version of Record
More information
Accepted/In Press date: 2 November 2023
Published date: 27 November 2023
Additional Information:
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) under Grant No. EP/V047256/1 and by the University of Nottingham Propulsion Futures Beacon. M.P.W. acknowledges funding from a Nottingham Research Fellowship aligned to the Beacon. We thank the referees of this paper for their valuable insights and comments.
Identifiers
Local EPrints ID: 487404
URI: http://eprints.soton.ac.uk/id/eprint/487404
ISSN: 1077-3118
PURE UUID: 235a9a48-86f3-4fcc-b13f-1623dce478d8
Catalogue record
Date deposited: 20 Feb 2024 12:45
Last modified: 18 Mar 2024 04:14
Export record
Altmetrics
Contributors
Author:
Yaoyang Hu
Author:
Michael P. Weir
Author:
H. Jessica Pereira
Author:
Oliver J. Amin
Author:
Jem Pitcairn
Author:
Matthew J. Cliffe
Author:
Andrew W. Rushforth
Author:
Gunta Kunakova
Author:
Kiryl Niherysh
Author:
Vladimir Korolkov
Author:
James Kertfoot
Author:
Oleg Makarovsky
Author:
Simon Woodward
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics