Spin-dependent thermoelectric effect in Co2Fe0.4Mn0.6Si thin film with perpendicular magnetic anisotropy

Sa Tu; Junfeng Hu; Tane Butler; Hanchen Wang; Youguang Zhang; Weisheng Zhao; Simon Granville; Haiming Yu

doi:10.1016/j.physleta.2018.11.054

Spin-dependent thermoelectric effect in Co₂Fe_0.4Mn_0.6Si thin film with perpendicular magnetic anisotropy

Sa Tu
, Junfeng Hu
, Tane Butler
, Hanchen Wang
, Youguang Zhang
, Weisheng Zhao
, Simon Granville^*
, Haiming Yu

^*Corresponding author for this work

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

7 Scopus citations

Abstract

We report the anomalous Nernst effect in trilayers containing a thin film of the half-metallic ferromagnetic Heusler alloy Co₂Fe_0.4Mn_0.6Si with perpendicular magnetic anisotropy. The structure is MgO/CFMS/Pd and we have studied the variation of anomalous Hall and Nernst effects as a function of CFMS and Pd thickness. The anomalous Nernst coefficient reaches 0.5 μV/K at room temperature and we have observed a strong dependence of the anomalous Nernst coefficient on the thickness of both layers. Our results indicate that inducing perpendicular magnetic anisotropy in a strongly spin-polarising Heusler alloy such as CFMS is very promising for new thermoelectric devices based on exploiting the anomalous Nernst effect.

Original language	English
Pages (from-to)	670-673
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	383
Issue number	7
DOIs	https://doi.org/10.1016/j.physleta.2018.11.054
State	Published - 4 Feb 2019

Keywords

Anomalous Nernst effect
Heusler alloy
Perpendicular magnetic anisotropy

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10.1016/j.physleta.2018.11.054

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title = "Spin-dependent thermoelectric effect in Co2Fe0.4Mn0.6Si thin film with perpendicular magnetic anisotropy",

abstract = "We report the anomalous Nernst effect in trilayers containing a thin film of the half-metallic ferromagnetic Heusler alloy Co2Fe0.4Mn0.6Si with perpendicular magnetic anisotropy. The structure is MgO/CFMS/Pd and we have studied the variation of anomalous Hall and Nernst effects as a function of CFMS and Pd thickness. The anomalous Nernst coefficient reaches 0.5 μV/K at room temperature and we have observed a strong dependence of the anomalous Nernst coefficient on the thickness of both layers. Our results indicate that inducing perpendicular magnetic anisotropy in a strongly spin-polarising Heusler alloy such as CFMS is very promising for new thermoelectric devices based on exploiting the anomalous Nernst effect.",

keywords = "Anomalous Nernst effect, Heusler alloy, Perpendicular magnetic anisotropy",

author = "Sa Tu and Junfeng Hu and Tane Butler and Hanchen Wang and Youguang Zhang and Weisheng Zhao and Simon Granville and Haiming Yu",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = feb,

day = "4",

doi = "10.1016/j.physleta.2018.11.054",

language = "英语",

volume = "383",

pages = "670--673",

journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",

issn = "0375-9601",

publisher = "Elsevier B.V.",

number = "7",

}

TY - JOUR

T1 - Spin-dependent thermoelectric effect in Co2Fe0.4Mn0.6Si thin film with perpendicular magnetic anisotropy

AU - Tu, Sa

AU - Hu, Junfeng

AU - Butler, Tane

AU - Wang, Hanchen

AU - Zhang, Youguang

AU - Zhao, Weisheng

AU - Granville, Simon

AU - Yu, Haiming

PY - 2019/2/4

Y1 - 2019/2/4

N2 - We report the anomalous Nernst effect in trilayers containing a thin film of the half-metallic ferromagnetic Heusler alloy Co2Fe0.4Mn0.6Si with perpendicular magnetic anisotropy. The structure is MgO/CFMS/Pd and we have studied the variation of anomalous Hall and Nernst effects as a function of CFMS and Pd thickness. The anomalous Nernst coefficient reaches 0.5 μV/K at room temperature and we have observed a strong dependence of the anomalous Nernst coefficient on the thickness of both layers. Our results indicate that inducing perpendicular magnetic anisotropy in a strongly spin-polarising Heusler alloy such as CFMS is very promising for new thermoelectric devices based on exploiting the anomalous Nernst effect.

AB - We report the anomalous Nernst effect in trilayers containing a thin film of the half-metallic ferromagnetic Heusler alloy Co2Fe0.4Mn0.6Si with perpendicular magnetic anisotropy. The structure is MgO/CFMS/Pd and we have studied the variation of anomalous Hall and Nernst effects as a function of CFMS and Pd thickness. The anomalous Nernst coefficient reaches 0.5 μV/K at room temperature and we have observed a strong dependence of the anomalous Nernst coefficient on the thickness of both layers. Our results indicate that inducing perpendicular magnetic anisotropy in a strongly spin-polarising Heusler alloy such as CFMS is very promising for new thermoelectric devices based on exploiting the anomalous Nernst effect.

KW - Anomalous Nernst effect

KW - Heusler alloy

KW - Perpendicular magnetic anisotropy

UR - https://www.scopus.com/pages/publications/85058499620

U2 - 10.1016/j.physleta.2018.11.054

DO - 10.1016/j.physleta.2018.11.054

M3 - 文章

AN - SCOPUS:85058499620

SN - 0375-9601

VL - 383

SP - 670

EP - 673

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 7

ER -

Spin-dependent thermoelectric effect in Co₂Fe_0.4Mn_0.6Si thin film with perpendicular magnetic anisotropy

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Keywords

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