Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films

Abstract Linear magnetoresistance (LMR) is a special case of a magnetic-field induced resistivity response, which has been reported in highly disordered semiconductor systems and in topological materials. In this work, we observe LMR effect in half-metallic perovskite Sr2CrMoO6 thin films, of which...

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Autores principales:	Zhao-Cai Wang, Lei Chen, Shuang-Shuang Li, Jing-Shi Ying, F. Tang, Guan-Yin Gao, Y. Fang, Weiyao Zhao, David Cortie, Xiaolin Wang, Ren-Kui Zheng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/56ca56dca44c4082968384c1029f41b8
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spelling	oai:doaj.org-article:56ca56dca44c4082968384c1029f41b82021-12-02T15:49:42ZGiant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films10.1038/s41535-021-00354-12397-4648https://doaj.org/article/56ca56dca44c4082968384c1029f41b82021-05-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00354-1https://doaj.org/toc/2397-4648Abstract Linear magnetoresistance (LMR) is a special case of a magnetic-field induced resistivity response, which has been reported in highly disordered semiconductor systems and in topological materials. In this work, we observe LMR effect in half-metallic perovskite Sr2CrMoO6 thin films, of which the maximum MR value exceeds +1600% at 2 K and 14 T. It is an unusual behavior in ferrimagnetic double perovskite material like Sr2CrMoO6, which are known for intrinsic tunneling-type negative magnetoresistance. In the thin films, the high carriers’ density (~1022 cm−3) and ultrahigh mobility (~104 cm2 V−1 s−1) provide a low-resistivity (~10 nΩ·cm) platform for spin-polarized current. Our DFT calculations and magnetic measurements further support the half-metal band structure. The LMR effect in Sr2CrMoO6 could possibly originate from transport behavior that is governed by the guiding center motion of cyclotron orbitals, where the magnetic domain structure possibly provides disordered potential. The ultrahigh mobility and LMR in this system could broaden the applications of perovskites, and introduce more research on metallic oxide ferri-/ferro-magnetic materials.Zhao-Cai WangLei ChenShuang-Shuang LiJing-Shi YingF. TangGuan-Yin GaoY. FangWeiyao ZhaoDavid CortieXiaolin WangRen-Kui ZhengNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Zhao-Cai Wang Lei Chen Shuang-Shuang Li Jing-Shi Ying F. Tang Guan-Yin Gao Y. Fang Weiyao Zhao David Cortie Xiaolin Wang Ren-Kui Zheng Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films
description	Abstract Linear magnetoresistance (LMR) is a special case of a magnetic-field induced resistivity response, which has been reported in highly disordered semiconductor systems and in topological materials. In this work, we observe LMR effect in half-metallic perovskite Sr2CrMoO6 thin films, of which the maximum MR value exceeds +1600% at 2 K and 14 T. It is an unusual behavior in ferrimagnetic double perovskite material like Sr2CrMoO6, which are known for intrinsic tunneling-type negative magnetoresistance. In the thin films, the high carriers’ density (~1022 cm−3) and ultrahigh mobility (~104 cm2 V−1 s−1) provide a low-resistivity (~10 nΩ·cm) platform for spin-polarized current. Our DFT calculations and magnetic measurements further support the half-metal band structure. The LMR effect in Sr2CrMoO6 could possibly originate from transport behavior that is governed by the guiding center motion of cyclotron orbitals, where the magnetic domain structure possibly provides disordered potential. The ultrahigh mobility and LMR in this system could broaden the applications of perovskites, and introduce more research on metallic oxide ferri-/ferro-magnetic materials.
format	article
author	Zhao-Cai Wang Lei Chen Shuang-Shuang Li Jing-Shi Ying F. Tang Guan-Yin Gao Y. Fang Weiyao Zhao David Cortie Xiaolin Wang Ren-Kui Zheng
author_facet	Zhao-Cai Wang Lei Chen Shuang-Shuang Li Jing-Shi Ying F. Tang Guan-Yin Gao Y. Fang Weiyao Zhao David Cortie Xiaolin Wang Ren-Kui Zheng
author_sort	Zhao-Cai Wang
title	Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films
title_short	Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films
title_full	Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films
title_fullStr	Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films
title_full_unstemmed	Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films
title_sort	giant linear magnetoresistance in half-metallic sr2crmoo6 thin films
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/56ca56dca44c4082968384c1029f41b8
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Giant linear magnetoresistance in half-metallic Sr2CrMoO6 thin films

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