{"title":"未填充沸石 CoP3 中部分 Eu 填充的影响","authors":"Zicheng Tao, Chao Zhang, Jian Yuan, Renjie Zhang, Xia Wang, Zhenhai Yu, Wei Xia, Yaobo Huang, Shihao Zhang, Yanfeng Guo","doi":"10.1103/physrevb.110.035156","DOIUrl":null,"url":null,"abstract":"The unfilled skutterudite <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>Co</mi><msub><mi mathvariant=\"normal\">P</mi><mn>3</mn></msub></mrow></math> hosts extremely large magnetoresistance (∼2 × <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msup><mrow><mn>10</mn></mrow><mn>4</mn></msup><mo>%</mo></mrow></math> at 30 T and 2 K), large hole mobility (∼2 × <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mn>10</mn></mrow><mn>4</mn></msup><mo> </mo><mrow><mi mathvariant=\"normal\">c</mi><msup><mrow><mi mathvariant=\"normal\">m</mi></mrow><mn>2</mn></msup><mspace width=\"0.16em\"></mspace><msup><mrow><mi mathvariant=\"normal\">V</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><mspace width=\"0.16em\"></mspace><msup><mrow><mi mathvariant=\"normal\">s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math>, 2 K), and a fourfold quadratic contact point (QCP) above the Fermi level in the electronic structure. We unveil herein that the partial filling of Eu onto the icosahedral void sites of <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>Co</mi><msub><mi mathvariant=\"normal\">P</mi><mn>3</mn></msub></mrow></math> can shift the QCP to lie below the Fermi level while retaining the high carrier mobility (∼1.6 × <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mn>10</mn></mrow><mn>4</mn></msup><mo> </mo><mrow><mi mathvariant=\"normal\">c</mi><msup><mrow><mi mathvariant=\"normal\">m</mi></mrow><mn>2</mn></msup><mspace width=\"0.16em\"></mspace><msup><mrow><mi mathvariant=\"normal\">V</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><mspace width=\"0.16em\"></mspace><msup><mrow><mi mathvariant=\"normal\">s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math>, 2 K). Unlike nonmagnetic <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>Co</mi><msub><mi mathvariant=\"normal\">P</mi><mn>3</mn></msub></mrow></math>, partially filled skutterudite <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi mathvariant=\"normal\">Eu</mi><mrow><mn>0.412</mn></mrow></msub><msub><mi mathvariant=\"normal\">Co</mi><mn>4</mn></msub><msub><mi mathvariant=\"normal\">P</mi><mn>12</mn></msub></mrow></math> is a soft ferromagnet with almost isotropic magnetism. Additionally, an intriguing topological Hall effect is observed, likely hinting an unusual spin texture. In this paper, we provide useful insights into the interplay between magnetism and the nontrivial feature of the electronic band structure, which would guide more efforts in studying this issue.","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of partial Eu filling in the unfilled skutterudite CoP3\",\"authors\":\"Zicheng Tao, Chao Zhang, Jian Yuan, Renjie Zhang, Xia Wang, Zhenhai Yu, Wei Xia, Yaobo Huang, Shihao Zhang, Yanfeng Guo\",\"doi\":\"10.1103/physrevb.110.035156\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The unfilled skutterudite <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><mi>Co</mi><msub><mi mathvariant=\\\"normal\\\">P</mi><mn>3</mn></msub></mrow></math> hosts extremely large magnetoresistance (∼2 × <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msup><mrow><mn>10</mn></mrow><mn>4</mn></msup><mo>%</mo></mrow></math> at 30 T and 2 K), large hole mobility (∼2 × <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msup><mrow><mn>10</mn></mrow><mn>4</mn></msup><mo> </mo><mrow><mi mathvariant=\\\"normal\\\">c</mi><msup><mrow><mi mathvariant=\\\"normal\\\">m</mi></mrow><mn>2</mn></msup><mspace width=\\\"0.16em\\\"></mspace><msup><mrow><mi mathvariant=\\\"normal\\\">V</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><mspace width=\\\"0.16em\\\"></mspace><msup><mrow><mi mathvariant=\\\"normal\\\">s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math>, 2 K), and a fourfold quadratic contact point (QCP) above the Fermi level in the electronic structure. We unveil herein that the partial filling of Eu onto the icosahedral void sites of <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><mi>Co</mi><msub><mi mathvariant=\\\"normal\\\">P</mi><mn>3</mn></msub></mrow></math> can shift the QCP to lie below the Fermi level while retaining the high carrier mobility (∼1.6 × <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msup><mrow><mn>10</mn></mrow><mn>4</mn></msup><mo> </mo><mrow><mi mathvariant=\\\"normal\\\">c</mi><msup><mrow><mi mathvariant=\\\"normal\\\">m</mi></mrow><mn>2</mn></msup><mspace width=\\\"0.16em\\\"></mspace><msup><mrow><mi mathvariant=\\\"normal\\\">V</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><mspace width=\\\"0.16em\\\"></mspace><msup><mrow><mi mathvariant=\\\"normal\\\">s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math>, 2 K). Unlike nonmagnetic <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><mi>Co</mi><msub><mi mathvariant=\\\"normal\\\">P</mi><mn>3</mn></msub></mrow></math>, partially filled skutterudite <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><msub><mi mathvariant=\\\"normal\\\">Eu</mi><mrow><mn>0.412</mn></mrow></msub><msub><mi mathvariant=\\\"normal\\\">Co</mi><mn>4</mn></msub><msub><mi mathvariant=\\\"normal\\\">P</mi><mn>12</mn></msub></mrow></math> is a soft ferromagnet with almost isotropic magnetism. Additionally, an intriguing topological Hall effect is observed, likely hinting an unusual spin texture. In this paper, we provide useful insights into the interplay between magnetism and the nontrivial feature of the electronic band structure, which would guide more efforts in studying this issue.\",\"PeriodicalId\":20082,\"journal\":{\"name\":\"Physical Review B\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2024-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Review B\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1103/physrevb.110.035156\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Physics and Astronomy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review B","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevb.110.035156","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
摘要
未填充的矽卡岩 CoP3 具有极高的磁阻(在 30 T 和 2 K 条件下为 2 × 104%)、极高的空穴迁移率(在 2 K 条件下为 2 × 104 cm2V-1s-1)以及高于费米级的四倍二次接触点(QCP)。我们在此揭示,在 CoP3 的二十面体空位上部分填充 Eu 可以将 QCP 移至费米水平以下,同时保持高载流子迁移率(∼1.6 × 104 cm2V-1s-1,2 K)。与非磁性 CoP3 不同,部分填充的沸石 Eu0.412Co4P12 是一种软铁磁体,具有几乎各向同性的磁性。此外,我们还观察到一种有趣的拓扑霍尔效应,这可能暗示了一种不寻常的自旋纹理。在本文中,我们就磁性与电子带结构的非偶性特征之间的相互作用提出了有益的见解,这将为研究这一问题提供更多的指导。
Effects of partial Eu filling in the unfilled skutterudite CoP3
The unfilled skutterudite hosts extremely large magnetoresistance (∼2 × at 30 T and 2 K), large hole mobility (∼2 × , 2 K), and a fourfold quadratic contact point (QCP) above the Fermi level in the electronic structure. We unveil herein that the partial filling of Eu onto the icosahedral void sites of can shift the QCP to lie below the Fermi level while retaining the high carrier mobility (∼1.6 × , 2 K). Unlike nonmagnetic , partially filled skutterudite is a soft ferromagnet with almost isotropic magnetism. Additionally, an intriguing topological Hall effect is observed, likely hinting an unusual spin texture. In this paper, we provide useful insights into the interplay between magnetism and the nontrivial feature of the electronic band structure, which would guide more efforts in studying this issue.
期刊介绍:
Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide.
PRB covers the full range of condensed matter, materials physics, and related subfields, including:
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-Topological states of matter