{"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}
引用次数: 0
Abstract
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:
-Structure and phase transitions
-Ferroelectrics and multiferroics
-Disordered systems and alloys
-Magnetism
-Superconductivity
-Electronic structure, photonics, and metamaterials
-Semiconductors and mesoscopic systems
-Surfaces, nanoscience, and two-dimensional materials
-Topological states of matter