Properties of single RuO2 layer embedded in SrTiO3

T. Harada; C.R. Hughes; R. Ashoori; A.V. Boris; H. Hilgenkamp; M.E. Holtz; L. Li; J. Mannhart; D.A. Muller; D.G. Schlom; A. Soukiassian; X.R. Wang; H. Boschker

doi:10.1109/INTMAG.2015.7157250

Properties of single RuO₂ layer embedded in SrTiO₃

T. Harada
, C.R. Hughes
, R. Ashoori
, A.V. Boris
, H. Hilgenkamp
, M.E. Holtz
, L. Li
, J. Mannhart
, D.A. Muller
, D.G. Schlom
, A. Soukiassian
, X.R. Wang
, H. Boschker

Interfaces and Correlated Electron Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

A two-dimensional ferromagnet is an interesting system both for basic understanding of magnetism and for spintronic applications. However, making such a system is not easy as ferromagnetism becomes more and more unstable with reducing the thickness of a ferromagnet. For example, in oxide systems such as SrRuO₃, La_1-xSr_xMnO₃, etc, ferromagnetism is lost around the thickness of a few unit cells [1, 2]. Recent theoretical studies have shown that a single SrRuO₃ layer can exhibit half-metallicity when it is sandwiched between SrTiO₃ lattices [3, 4]. The conduction electrons are predicted to exist only in RuO₂ layers, which means that the system is a two-dimensional half-metal. In this work, in order to demonstrate the theoretical prediction, we have fabricated high-quality SrRuO₃/SrTiO₃ superlattices using molecular beam epitaxy. Magnetic and transport measurements show a clear signature of ferromagnetism and conductivity.

Original language	English
Title of host publication	2015 IEEE International Magnetics Conference, INTERMAG 2015
Publisher	IEEE
ISBN (Electronic)	9781479973224
DOIs	https://doi.org/10.1109/INTMAG.2015.7157250
Publication status	Published - 14 Jul 2015
Event	IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China Duration: 11 May 2015 → 15 May 2015

Conference

Conference	IEEE International Magnetics Conference, INTERMAG 2015
Abbreviated title	INTERMAG 2015
Country/Territory	China
City	Beijing
Period	11/05/15 → 15/05/15

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@inproceedings{717e51a03712499399244afc2db18a13,

title = "Properties of single RuO2 layer embedded in SrTiO3",

abstract = "A two-dimensional ferromagnet is an interesting system both for basic understanding of magnetism and for spintronic applications. However, making such a system is not easy as ferromagnetism becomes more and more unstable with reducing the thickness of a ferromagnet. For example, in oxide systems such as SrRuO3, La1-xSrxMnO3, etc, ferromagnetism is lost around the thickness of a few unit cells [1, 2]. Recent theoretical studies have shown that a single SrRuO3 layer can exhibit half-metallicity when it is sandwiched between SrTiO3 lattices [3, 4]. The conduction electrons are predicted to exist only in RuO2 layers, which means that the system is a two-dimensional half-metal. In this work, in order to demonstrate the theoretical prediction, we have fabricated high-quality SrRuO3/SrTiO3 superlattices using molecular beam epitaxy. Magnetic and transport measurements show a clear signature of ferromagnetism and conductivity.",

author = "T. Harada and C.R. Hughes and R. Ashoori and A.V. Boris and H. Hilgenkamp and M.E. Holtz and L. Li and J. Mannhart and D.A. Muller and D.G. Schlom and A. Soukiassian and X.R. Wang and H. Boschker",

year = "2015",

month = jul,

day = "14",

doi = "10.1109/INTMAG.2015.7157250",

language = "English",

booktitle = "2015 IEEE International Magnetics Conference, INTERMAG 2015",

publisher = "IEEE",

address = "United States",

note = "IEEE International Magnetics Conference, INTERMAG 2015, INTERMAG 2015 ; Conference date: 11-05-2015 Through 15-05-2015",

}

Harada, T, Hughes, CR, Ashoori, R, Boris, AV, Hilgenkamp, H, Holtz, ME, Li, L, Mannhart, J, Muller, DA, Schlom, DG, Soukiassian, A, Wang, XR & Boschker, H 2015, Properties of single RuO₂ layer embedded in SrTiO₃. in 2015 IEEE International Magnetics Conference, INTERMAG 2015., 7157250, IEEE, IEEE International Magnetics Conference, INTERMAG 2015, Beijing, China, 11/05/15. https://doi.org/10.1109/INTMAG.2015.7157250

TY - GEN

T1 - Properties of single RuO2 layer embedded in SrTiO3

AU - Harada, T.

AU - Hughes, C.R.

AU - Ashoori, R.

AU - Boris, A.V.

AU - Hilgenkamp, H.

AU - Holtz, M.E.

AU - Li, L.

AU - Mannhart, J.

AU - Muller, D.A.

AU - Schlom, D.G.

AU - Soukiassian, A.

AU - Wang, X.R.

AU - Boschker, H.

PY - 2015/7/14

Y1 - 2015/7/14

N2 - A two-dimensional ferromagnet is an interesting system both for basic understanding of magnetism and for spintronic applications. However, making such a system is not easy as ferromagnetism becomes more and more unstable with reducing the thickness of a ferromagnet. For example, in oxide systems such as SrRuO3, La1-xSrxMnO3, etc, ferromagnetism is lost around the thickness of a few unit cells [1, 2]. Recent theoretical studies have shown that a single SrRuO3 layer can exhibit half-metallicity when it is sandwiched between SrTiO3 lattices [3, 4]. The conduction electrons are predicted to exist only in RuO2 layers, which means that the system is a two-dimensional half-metal. In this work, in order to demonstrate the theoretical prediction, we have fabricated high-quality SrRuO3/SrTiO3 superlattices using molecular beam epitaxy. Magnetic and transport measurements show a clear signature of ferromagnetism and conductivity.

AB - A two-dimensional ferromagnet is an interesting system both for basic understanding of magnetism and for spintronic applications. However, making such a system is not easy as ferromagnetism becomes more and more unstable with reducing the thickness of a ferromagnet. For example, in oxide systems such as SrRuO3, La1-xSrxMnO3, etc, ferromagnetism is lost around the thickness of a few unit cells [1, 2]. Recent theoretical studies have shown that a single SrRuO3 layer can exhibit half-metallicity when it is sandwiched between SrTiO3 lattices [3, 4]. The conduction electrons are predicted to exist only in RuO2 layers, which means that the system is a two-dimensional half-metal. In this work, in order to demonstrate the theoretical prediction, we have fabricated high-quality SrRuO3/SrTiO3 superlattices using molecular beam epitaxy. Magnetic and transport measurements show a clear signature of ferromagnetism and conductivity.

UR - https://www.scopus.com/pages/publications/84942474727

U2 - 10.1109/INTMAG.2015.7157250

DO - 10.1109/INTMAG.2015.7157250

M3 - Conference contribution

BT - 2015 IEEE International Magnetics Conference, INTERMAG 2015

PB - IEEE

T2 - IEEE International Magnetics Conference, INTERMAG 2015

Y2 - 11 May 2015 through 15 May 2015

ER -

Properties of single RuO₂ layer embedded in SrTiO₃

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