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Magnetic and Electronic Properties of Weyl Semimetal Co 2 MnGa Thin Films.

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Title: Magnetic and Electronic Properties of Weyl Semimetal Co 2 MnGa Thin Films.
Authors: Swekis, Peter1,2 (AUTHOR) Peter.Swekis@cpfs.mpg.de, Sukhanov, Aleksandr S.1,2 (AUTHOR) Alexandr.Sukhanov@cpfs.mpg.de, Chen, Yi-Cheng1,3 (AUTHOR) ycchen.mse00@g2.nctu.edu.tw, Gloskovskii, Andrei4 (AUTHOR) andrei.hloskovsky@desy.de, Fecher, Gerhard H.1 (AUTHOR) Gerhard.Fecher@cpfs.mpg.de, Panagiotopoulos, Ioannis5 (AUTHOR) ipanagio@uoi.gr, Sichelschmidt, Jörg1 (AUTHOR) Joerg.Sichelschmidt@cpfs.mpg.de, Ukleev, Victor6 (AUTHOR) victor.ukleev@psi.ch, Devishvili, Anton7,8 (AUTHOR) Alexey.Vorobiev@physics.uu.se, Vorobiev, Alexei8 (AUTHOR), Inosov, Dmytro S.2 (AUTHOR), Goennenwein, Sebastian T. B.2,9,10 (AUTHOR), Felser, Claudia1 (AUTHOR) Claudia.Felser@cpfs.mpg.de, Markou, Anastasios1 (AUTHOR) Anastasios.Markou@cpfs.mpg.de
Source: Nanomaterials (2079-4991). Jan2021, Vol. 11 Issue 1, p251-251. 1p.
Subjects: Thin films, Magnetic properties, Carbon dioxide, Neutron reflectometry, X-ray photoelectron spectroscopy, Ferromagnetic resonance
Abstract: Magnetic Weyl semimetals are newly discovered quantum materials with the potential for use in spintronic applications. Of particular interest is the cubic Heusler compound Co2MnGa due to its inherent magnetic and topological properties. This work presents the structural, magnetic and electronic properties of magnetron co-sputtered Co2MnGa thin films, with thicknesses ranging from 10 to 80 nm. Polarized neutron reflectometry confirmed a uniform magnetization through the films. Hard x-ray photoelectron spectroscopy revealed a high degree of spin polarization and localized (itinerant) character of the Mn d (Co d) valence electrons and accompanying magnetic moments. Further, broadband and field orientation-dependent ferromagnetic resonance measurements indicated a relation between the thickness-dependent structural and magnetic properties. The increase of the tensile strain-induced tetragonal distortion in the thinner films was reflected in an increase of the cubic anisotropy term and a decrease of the perpendicular uniaxial term. The lattice distortion led to a reduction of the Gilbert damping parameter and the thickness-dependent film quality affected the inhomogeneous linewidth broadening. These experimental findings will enrich the understanding of the electronic and magnetic properties of magnetic Weyl semimetal thin films. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Magnetic and Electronic Properties of Weyl Semimetal Co 2 MnGa Thin Films.
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  Data: <searchLink fieldCode="AR" term="%22Swekis%2C+Peter%22">Swekis, Peter</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> Peter.Swekis@cpfs.mpg.de</i><br /><searchLink fieldCode="AR" term="%22Sukhanov%2C+Aleksandr+S%2E%22">Sukhanov, Aleksandr S.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> Alexandr.Sukhanov@cpfs.mpg.de</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Yi-Cheng%22">Chen, Yi-Cheng</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> ycchen.mse00@g2.nctu.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Gloskovskii%2C+Andrei%22">Gloskovskii, Andrei</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> andrei.hloskovsky@desy.de</i><br /><searchLink fieldCode="AR" term="%22Fecher%2C+Gerhard+H%2E%22">Fecher, Gerhard H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Gerhard.Fecher@cpfs.mpg.de</i><br /><searchLink fieldCode="AR" term="%22Panagiotopoulos%2C+Ioannis%22">Panagiotopoulos, Ioannis</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> ipanagio@uoi.gr</i><br /><searchLink fieldCode="AR" term="%22Sichelschmidt%2C+Jörg%22">Sichelschmidt, Jörg</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Joerg.Sichelschmidt@cpfs.mpg.de</i><br /><searchLink fieldCode="AR" term="%22Ukleev%2C+Victor%22">Ukleev, Victor</searchLink><relatesTo>6</relatesTo> (AUTHOR)<i> victor.ukleev@psi.ch</i><br /><searchLink fieldCode="AR" term="%22Devishvili%2C+Anton%22">Devishvili, Anton</searchLink><relatesTo>7,8</relatesTo> (AUTHOR)<i> Alexey.Vorobiev@physics.uu.se</i><br /><searchLink fieldCode="AR" term="%22Vorobiev%2C+Alexei%22">Vorobiev, Alexei</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Inosov%2C+Dmytro+S%2E%22">Inosov, Dmytro S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Goennenwein%2C+Sebastian+T%2E+B%2E%22">Goennenwein, Sebastian T. B.</searchLink><relatesTo>2,9,10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Felser%2C+Claudia%22">Felser, Claudia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Claudia.Felser@cpfs.mpg.de</i><br /><searchLink fieldCode="AR" term="%22Markou%2C+Anastasios%22">Markou, Anastasios</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Anastasios.Markou@cpfs.mpg.de</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jan2021, Vol. 11 Issue 1, p251-251. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+properties%22">Magnetic properties</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+reflectometry%22">Neutron reflectometry</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+photoelectron+spectroscopy%22">X-ray photoelectron spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Ferromagnetic+resonance%22">Ferromagnetic resonance</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Magnetic Weyl semimetals are newly discovered quantum materials with the potential for use in spintronic applications. Of particular interest is the cubic Heusler compound Co2MnGa due to its inherent magnetic and topological properties. This work presents the structural, magnetic and electronic properties of magnetron co-sputtered Co2MnGa thin films, with thicknesses ranging from 10 to 80 nm. Polarized neutron reflectometry confirmed a uniform magnetization through the films. Hard x-ray photoelectron spectroscopy revealed a high degree of spin polarization and localized (itinerant) character of the Mn d (Co d) valence electrons and accompanying magnetic moments. Further, broadband and field orientation-dependent ferromagnetic resonance measurements indicated a relation between the thickness-dependent structural and magnetic properties. The increase of the tensile strain-induced tetragonal distortion in the thinner films was reflected in an increase of the cubic anisotropy term and a decrease of the perpendicular uniaxial term. The lattice distortion led to a reduction of the Gilbert damping parameter and the thickness-dependent film quality affected the inhomogeneous linewidth broadening. These experimental findings will enrich the understanding of the electronic and magnetic properties of magnetic Weyl semimetal thin films. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/nano11010251
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
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        PageCount: 1
        StartPage: 251
    Subjects:
      – SubjectFull: Thin films
        Type: general
      – SubjectFull: Magnetic properties
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Neutron reflectometry
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      – SubjectFull: X-ray photoelectron spectroscopy
        Type: general
      – SubjectFull: Ferromagnetic resonance
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    Titles:
      – TitleFull: Magnetic and Electronic Properties of Weyl Semimetal Co 2 MnGa Thin Films.
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              M: 01
              Text: Jan2021
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