Priyanka Meena, Amarjyoti Choudhury, Mohit Mudgal, Sonika Bagga, V K Tiwari, Sarita Rajput, C S Yadav, Vivek Kumar Malik, T Maitra, Jayita Nayak
{"title":"Exploration of quantum oscillation in antiferromagnetic Weyl semimetal GdSiAl.","authors":"Priyanka Meena, Amarjyoti Choudhury, Mohit Mudgal, Sonika Bagga, V K Tiwari, Sarita Rajput, C S Yadav, Vivek Kumar Malik, T Maitra, Jayita Nayak","doi":"10.1088/1361-648X/ad912e","DOIUrl":null,"url":null,"abstract":"<p><p>GdSiAl single crystal has been investigated by means of magnetic and magneto-transport measurements and compared with<i>ab-initio</i>density functional theory (DFT) calculations. Significant non-saturating magnetoresistance reaching∼18%at 12T and2Kwas observed, alongside the presence of Shubnikov-de Haas oscillations with the fundamental frequencies 22.09T and 77.33T. Shubnikov-de Haas oscillations provide the information about the nontrivial<i>π</i>Berry phase in GdSiAl with the Fermi surface areas of0.00211A˚-2and0.00739A˚-2. Angle-dependent magnetoresistance shows anisotropy with<i>θ</i>, exhibiting a maximum at 180°. The magnetic susceptibility data forH∥candH⊥creveals that the magnetic moments of Gd<sup>3+</sup>ions orders antiferromagnetically below 32K along with an another transition occurs at∼8K, which is consistent with the heat capacity measurements where a distinct<i>λ</i>-shaped anomaly has been observed near antiferromagnetic ordering temperature 32K. The high value of Debye temperature indicates the contribution of acoustic phonons. Electronic structure calculations suggest the existence of nested Fermi surface pockets characterized by nesting wave vectors that closely align with the observed magnetic ordering wave vector. Furthermore, DFT calculations reveal the presence of Weyl nodes in close proximity to the Fermi surface. Our findings from combined experimental and theoretical techniques indicate GdSiAl to be a potential candidate for an antiferromagnetic topological Weyl semimetal.</p>","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Physics: Condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1361-648X/ad912e","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
GdSiAl single crystal has been investigated by means of magnetic and magneto-transport measurements and compared withab-initiodensity functional theory (DFT) calculations. Significant non-saturating magnetoresistance reaching∼18%at 12T and2Kwas observed, alongside the presence of Shubnikov-de Haas oscillations with the fundamental frequencies 22.09T and 77.33T. Shubnikov-de Haas oscillations provide the information about the nontrivialπBerry phase in GdSiAl with the Fermi surface areas of0.00211A˚-2and0.00739A˚-2. Angle-dependent magnetoresistance shows anisotropy withθ, exhibiting a maximum at 180°. The magnetic susceptibility data forH∥candH⊥creveals that the magnetic moments of Gd3+ions orders antiferromagnetically below 32K along with an another transition occurs at∼8K, which is consistent with the heat capacity measurements where a distinctλ-shaped anomaly has been observed near antiferromagnetic ordering temperature 32K. The high value of Debye temperature indicates the contribution of acoustic phonons. Electronic structure calculations suggest the existence of nested Fermi surface pockets characterized by nesting wave vectors that closely align with the observed magnetic ordering wave vector. Furthermore, DFT calculations reveal the presence of Weyl nodes in close proximity to the Fermi surface. Our findings from combined experimental and theoretical techniques indicate GdSiAl to be a potential candidate for an antiferromagnetic topological Weyl semimetal.
期刊介绍:
Journal of Physics: Condensed Matter covers the whole of condensed matter physics including soft condensed matter and nanostructures. Papers may report experimental, theoretical and simulation studies. Note that papers must contain fundamental condensed matter science: papers reporting methods of materials preparation or properties of materials without novel condensed matter content will not be accepted.