M
Mary Upton
Researcher at Argonne National Laboratory
Publications - 105
Citations - 2468
Mary Upton is an academic researcher from Argonne National Laboratory. The author has contributed to research in topics: Scattering & Resonant inelastic X-ray scattering. The author has an hindex of 26, co-authored 86 publications receiving 2129 citations. Previous affiliations of Mary Upton include University of Illinois at Urbana–Champaign & Brookhaven National Laboratory.
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Journal ArticleDOI
Magnetic excitation spectra of Sr2IrO4 probed by resonant inelastic x-ray scattering: establishing links to cuprate superconductors.
Jungho Kim,Diego Casa,Mary Upton,Thomas Gog,Young-June Kim,John F. Mitchell,M. van Veenendaal,M. van Veenendaal,M. Daghofer,J.E. van den Brink,Giniyat Khaliullin,Bumjoon Kim +11 more
TL;DR: In this article, the authors used resonant inelastic x-ray scattering to reveal the nature of magnetic interactions in Sr2IrO4, a 5d transition-metal oxide with a spin-orbit entangled ground state and J(eff)=1/2 magnetic moments.
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Crystal-Field Splitting and Correlation Effect on the Electronic Structure of A2IrO3
Hlynur Gretarsson,J. P. Clancy,Xuerong Liu,John Hill,Emil S. Bozin,Yogesh Singh,Soham Manni,Philipp Gegenwart,Jungho Kim,Ayman Said,Diego Casa,Thomas Gog,Mary Upton,Heung-Sik Kim,Jaejun Yu,Vamshi M. Katukuri,Liviu Hozoi,Jeroen van den Brink,Young-June Kim +18 more
TL;DR: The electronic structure of the honeycomb lattice iridates Na(2)IrO(3) and Li(2), which have been investigated using resonant inelastic x-ray scattering (RIXS), suggest that both can be described as spin-orbit Mott insulators, similar to the square lattice IrO(4).
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Thermal stability and electronic structure of atomically uniform Pb films on Si(111).
TL;DR: Atomically uniform Pb films are successfully prepared on Si(111), despite a large lattice mismatch, and Angle-resolving photoemission measurements of the electronic structure show layer-resolved quantum well states which can be correlated with dramatic variations in thermal stability.
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Large Spin-Wave Energy Gap in the Bilayer Iridate Sr3Ir2O7: Evidence for Enhanced Dipolar Interactions Near the Mott Metal-Insulator Transition
Jungho Kim,Ayman Said,Diego Casa,Mary Upton,Thomas Gog,M. Daghofer,George Jackeli,J.E. van den Brink,Giniyat Khaliullin,Bumjoon Kim +9 more
TL;DR: It is found that the giant magnon gap results from bond-directional pseudod bipolar interactions that are strongly enhanced near the metal-insulator transition boundary, suggesting that novel magnetism, such as that inspired by the Kitaev model built on the pseudodipolar interactions, may emerge in small charge-gap iridates.
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X-ray Spectroscopic Characterization of Co(IV) and Metal–Metal Interactions in Co4O4: Electronic Structure Contributions to the Formation of High-Valent States Relevant to the Oxygen Evolution Reaction
Ryan G. Hadt,Dugan Hayes,Casey N. Brodsky,Andrew M. Ullman,Diego Casa,Mary Upton,Daniel G. Nocera,Lin X. Chen +7 more
TL;DR: A wide range of complementary X-ray spectroscopies coupled to DFT calculations are used to study Co(III)4O4 cubanes and their first oxidized derivatives, which provide insight into the high-valent Co(IV) centers responsible for the activity of molecular and heterogeneous OER catalysts.