Magnetism and fermiology of kagome magnet YMn6Sn4Ge2

Bhandari, Hari; Dally, Rebecca L.; Siegfried, Peter E.; Regmi, Resham B.; Rule, Kirrily C.; Chi, Songxue; Lynn, Jeffrey W.; Mazin, I. I.; Ghimire, Nirmal J.

doi:10.1038/s41535-023-00616-0

Title: Magnetism and fermiology of kagome magnet YMn₆Sn₄Ge₂

Journal Article · Sun Jan 07 23:00:00 EST 2024 · npj Quantum Materials

DOI: https://doi.org/10.1038/s41535-023-00616-0 · OSTI ID:2281156

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^[2]; Siegfried, Peter E. ^[3]; Regmi, Resham B. ^[4];

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^[3]; Ghimire, Nirmal J. ^[1]

George Mason University, Fairfax, VA (United States); University of Notre Dame, IN (United States)
National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States)
George Mason University, Fairfax, VA (United States)
University of Notre Dame, IN (United States)
University of Wollongong, NSW (Australia); Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW (Australia)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Kagome lattice magnets are an interesting class of materials as they can host topological properties in their magnetic and electronic structures. YMn₆Sn₆ is one such compound in which various exotic magnetic and electronic topological properties have been realized. Here, by means of a partial substitution of Sn with an isovalent and slightly smaller atom Ge, we demonstrate the sensitivity of such chemical substitution on the magnetic structure and its influence in the electronic properties. Magnetic structure of YMn₆Sn₄Ge₂ determined by neutron diffraction reveals an incommensurate staggered magnetic spiral with a slightly larger spiral pitch than in YMn₆Sn₆. This change in magnetic structure influences the Fermi surface enhancing the out-of-plane conductivity. Such a sensitivity to the partial chemical substitution provides a great potential for engineering the magnetic phases and associated electronic properties not only in YMn₆Sn₆, but also in the large family of 166 rare-earth kagome magnet.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF)

Grant/Contract Number:: AC05-00OR22725; SC0021089

OSTI ID:: 2281156

Journal Information:: npj Quantum Materials, Journal Name: npj Quantum Materials Journal Issue: 1 Vol. 9; ISSN 2397-4648

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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