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Showing 15 results for Researcher: David S. Parker

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    August 12, 2026

    1 MIN READ

    Synergistic Doping Stabilizes a Tunable Kagome Family

    Scientific Achievement: Established new family of magnetically tunable, cleavable kagome metals by combining chemical substitution, electron filling, and magnetic properties to develop new intermetallic phases.Significance and Impact: Introduces a new synthetic strategy for stabilizing and tuning complex quantum materials, opening new routes to discover Kagome metals with controllable magnetic and electronic properties.DOI: 10.1021/jacs.6c06163

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    June 23, 2026

    1 MIN READ

    Achieving Anisotropy Through Spin-Orbit Coupling in a Chromium-Based Ferromagnet

    Scientific Achievement: Discovered unique ferromagnetic crystals with strong anisotropy by combining the magnetism of chromium with the strong spin-orbit coupling of gold.Significance and Impact: This work provides understanding of a new anisotropic ferromagnet and introduces a new crystal chemistry that may enable versatile metallic magnets for spintronics.DOI: 10.1021/acs.chemmater.6c00999

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    September 16, 2025

    1 MIN READ

    Phonon Scattering Unspins Tale of Magnetism in RuO2

    Scientific Achievement: Neutron and X-ray scattering show that bulk RuO₂ exhibits a highly correlated ground state without magnetic moments, despite prior claims of altermagnetism.Significance and Impact: Experimentally-constrained models that decouple electronic correlations from spins emerge that will guide the understanding of correlations in spintronics materials.DOI: 10.1016/j.xcrp.2025.102852

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    May 12, 2025

    1 MIN READ

    Discovery of a Van Hove Singularity Driven Spin-Density Wave in a Kagome Metal

    Scientific Achievement: Neutron diffraction, angular resolved photoemission (ARPES), and density functional theory (DFT) calculations reveal a spin‑density wave (SDW) ground state driven by electronic van Hove singularities (VHSs) in the kagome metal CeTi3Bi4.Significance and Impact: This work offers a new perspective into novel correlated properties driven by the peculiar electronic structure of a kagome lattice.DOI: 10.1038/s41467-025-59460-4

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    March 31, 2025

    1 MIN READ

    Discovery of New Kagome Metals Unveils Origins of Density Wave Instability

    Scientific Achievement: Discovered a new model family of kagome metals and validated the structural origin of density wave instabilities in these highly-studied electronic materials.Significance and Impact: Provides an understanding of the interplay between structure and emergent instability, offering a route to intertwine magnetism, topology, and symmetry.DOI: 10.1021/jacs.4c16347

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    November 7, 2024

    1 MIN READ

    Complexity and Competition in Kagome Metals

    Scientific Achievement: Discovered new, cleavable, kagome metal with complex antiferromagnetism, competing for stability against a related family of “shurikagome” metals.Significance and Impact: Provides new material platform for the interplay of complex magnetism and kagome band topology and a methodology to uncover other new kagome metals.DOI: 10.1021/acs.chemmater.4c01449

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    November 4, 2024

    1 MIN READ

    Marrying Altermagnetism and Ferromagnetism in MnTe

    Scientific Achievement: Scientists reveal that Mn-doping can be used to control ferromagnetism and novel altermagnetic responses in MnTe.Significance and Impact: Understanding and controlling exotic transport phenomena in altermagnets will enable new applications in spintronics that rely on novel intertwined spin-momentum coupling.DOI: 10.1002/adfm.202405829

  • ORNL Placeholder Image

    December 19, 2023

    1 MIN READ

    Weaving magnetism into a family of kagome metals

    Scientific Achievement: A new class of cleavable kagome metal compounds was discovered in which topological electronic structures are intertwined with magnetism. Significance and Impact: These materials provide a new platform to understand the interplay of magnetism and topology that is highly accessible to spectroscopy and device fabrication.DOI: 10.1021/acs.chemmater.3c02289

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    November 16, 2023

    6 MIN READ

    Three-pronged approach discerns qualities of quantum spin liquids

    A team of researchers associated with the Quantum Science Center headquartered at the Department of Energy's Oak Ridge National Laboratory has confirmed the presence of quantum spin liquid behavior in a new material with a triangular lattice, KYbSe2.

  • ORNL Placeholder Image

    September 30, 2022

    1 MIN READ

    Flat bands produce magnetic order in Kagome metal

    Scientific Achievement: Emergent flat-band-related magnetic order was designed and demonstrated by chemically tuning a nonmagnetic kagome metal using a nonmagnetic dopant.Significance and Impact: Demonstrates flat bands arising from electronically frustrated lattices provide a new way to realize correlated ground states in bulk crystals.DOI: 10.1021/acs.chemmater.2c01634

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    February 22, 2022

    1 MIN READ

    Tiny doping drives giant magnetic anisotropy response

    Scientific Achievement: Neutron scattering reveals easy and complete switching between planar and axial spins upon doping with Li in antiferromagnetic MnTe. Significance and Impact: Deliberate control of the spin orientation is a crucial step towards increasing functionalities and developing easy switching of magnetic states in future spintronic or topological materials.DOI: 10.1103/PhysRevMaterials.6.014404

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