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Showing 1–12 of 12 results
Advanced filters: Author: George Sawatzky Clear advanced filters
  • How lattice degrees of freedom affect the topological properties of electrons remains rarely explored. Here, Moeller et al. predict non-trivial topological effects in long-lived polaron bands by studying a two-dimensional model stabilized by realistic electron-phonon coupling.

    • Mirko M. Möller
    • George A. Sawatzky
    • Mona Berciu
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-6
  • A variational approach for a three-band model provides deeper insights into the dynamics of a hole doped into an antiferromagnetic layer, with important implications for theories of high-temperature superconductivity.

    • Hadi Ebrahimnejad
    • George A. Sawatzky
    • Mona Berciu
    Research
    Nature Physics
    Volume: 10, P: 951-955
  • Magnetism alone was thought to be responsible for superconductivity in copper oxides. The finding of superconductivity in a non-magnetic compound that is structurally similar to these copper oxides challenges this view.

    • George A. Sawatzky
    News & Views
    Nature
    Volume: 572, P: 592-593
  • Rare-earth perovskite nickelates show intriguing metal–insulator transitions, whose mechanism remains elusive. Here, Bisogni et al. evidenced a 3d8 Ni configuration together with abundance of oxygen 2p holes in the ground state of a NdNiO3thin film, suggesting a negative charge-transfer scenario.

    • Valentina Bisogni
    • Sara Catalano
    • Thorsten Schmitt
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-8
  • The origin of the photoemission replica bands in monolayer FeSe/SrTiO3 remains controversial. Here, the authors perform angle-resolved photoemission spectroscopy with polarized photon on FeSe/SrTiO3 and observe high-order replica bands with high intensity from various Fe 3d bands, suggesting a mixed mechanism.

    • Chong Liu
    • Ryan P. Day
    • Ke Zou
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8
  • The internal structure of the neutron has now been probed by highly energetic photons scattering off it. Combined with previous results for protons, these measurements reveal the contributions of quark flavours to the nucleon structure.

    • M. Benali
    • C. Desnault
    • P. Zhu
    Research
    Nature Physics
    Volume: 16, P: 191-198
  • It remains a challenge to find the structure and the distribution of the constituents of nucleons. Here the authors use a scattering method to get information about the gluons and quarks inside a proton and separate the contribution of Bethe-Heitler from the deeply virtual Compton scattering process.

    • M. Defurne
    • A. Martí Jiménez-Argüello
    • P. Zhu
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-7
  • High-entropy alloys are interesting as they enable the stabilization of high-symmetry phases, giving rise to unique emerging properties. Here, selenium fluctuations in (Ag,Sn)Se are investigated, revealing their role in promoting superconductivity and stabilizing the cubic rocksalt structure.

    • Mohamed Oudah
    • Daisuke Takegami
    • Hidenori Takagi
    ResearchOpen Access
    Communications Materials
    Volume: 6, P: 1-8
  • A high-precision parity-violating electron–quark scattering experiment provides measurements of a combination of electron–quark weak couplings with a precision five times higher than the single previous direct study, confirming the predictions of the electroweak particle-physics theory and providing constraints on parity-violating interactions beyond the standard model.

    • D. Wang
    • K. Pan
    • X. Zheng
    Research
    Nature
    Volume: 506, P: 67-70
  • Measurement of the asymmetry in the parity-violating scattering of polarized electrons on protons gives the weak charge of the proton as 0.0719 ± 0.0045, in agreement with the standard model.

    • D. Androić
    • D. S. Armstrong
    • S. Zhamkochyan
    Research
    Nature
    Volume: 557, P: 207-211