Local electronic structure of rutile 
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Occhialini, Connor A.; Bisogni, Valentina; You, Hoydoo; Barbour, Andi; Jarrige, Ignace; Mitchell, J. F.; Comin, Riccardo; Pelliciari, Jonathan

doi:10.1103/physrevresearch.3.033214

Cited by 24 publications

(10 citation statements)

References 62 publications

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“…RIXS is furthermore helpful when there is need to study the valence electronic structure as it probes the charge-neutral, dipole-forbidden, dd -excitations of a system, enabling to reconstruct its ground-state energy levels [26][27][28][29][30][31] . In particular, for 3d elements, such excitations can be accessed using the L 3 edge resonance in the soft x-ray range, promoting electrons from the 2p 3/2 core states to the 3d valence states.…”

Section: Resultsmentioning

confidence: 99%

Site-specific electronic and magnetic excitations of the skyrmion material Cu$_2$OSeO$_3$

Gu,

Wang,

Lin

et al. 2022

Preprint

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The manifestation of skyrmions in the Mott-insulator Cu 2 OSeO 3 originates from a delicate balance between magnetic and electronic energy scales. As a result of these intertwined couplings, the two symmetry-inequivalent magnetic ions, Cu-I and Cu-II, bond into a spin S=1 entangled tetrahedron. However, conceptualizing the unconventional properties of this material and the energy of the competing interactions is a challenging task due the complexity of this system. Here we combine X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering to uncover the electronic and magnetic excitations of Cu 2 OSeO 3 with site-specificity. We quantify the energies of the 3d crystal-field splitting for both Cu-I and Cu-II, fundamental to optimize model Hamiltonians. Additionally, we unveil a site-specific magnetic mode, indicating that individual spin character is preserved within the entangled-tetrahedron picture.Our results thus provide experimental constraint for validating theories that describe the interactions of Cu 2 OSeO 3 , highlighting the site-selective capabilities of resonant spectroscopies.

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Section: Resultsmentioning

confidence: 99%

Site-specific electronic and magnetic excitations of the skyrmion material Cu$_2$OSeO$_3$

Gu,

Wang,

Lin

et al. 2022

Preprint

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“…Rutile RuO 2 is a crucial material with a positive resistance temperature coefficient. Its conductivity is derived from the partially filled outer electrons of the Ru 4d valence electron structure [8] . The band gap calculated by p-d theory in RuO 2 is about 1.46eV, where Ru has +2~+6 valence multiple continuously changing valences.…”

Section: The Resistance Temperature Coefficient Of Ruo2 Film Deposite...mentioning

confidence: 99%

Sol-gel deposited RuO2 film on lead-bismuth-silicate glass for cryogenic quantum computing

Cai

Liu

Wei

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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Microchannel plate (MCP) is an important potential readout device for cryogenic quantum computing, especially for the quantum computation based on floating electrons of liquid helium surface. The signal readout time is a primary property of quantum computing, which is grounded in and proportional to the bulk resistance of the MCP multiplier. Notwithstanding, the bulk resistance of the MCP multiplier became giant at cryogenic temperature for the property of huge negative temperature coefficient of resistance, almost 105 Gohm at 20K~30K, resulting in a readout time of 10-2-1s at cryogenic temperature. That was one of the major bottlenecks for the cryogenic quantum computing application of MCPs. In this paper, ruthenium oxide films were sol-gel deposited onto the lead-bismuth-silicate glass, one kind of the base material for MCPs, produced by the Research and Development Center of Microchannel Plate, China Building Materials Academy. Surface topographic properties of the film were investigated with a laser scanning confocal microscope (LSCM). The hybrid bulk-resistance of RuO2 film deposited glass was measured in a modified Vacuum Photoelectron Imaging Test Facility (VPIT). It indicated that the sol-gel deposited RuO2 film could decrease the bulk resistance of hydrogen-reduced lead-bismuth-silicate glass and effectively mitigate its giant thermal resistance. This research can give a significant reference for developing MCP detectors in cryogenic quantum computing applications.

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“…The atomic configuration 4d 4 in a crystal field has been investigated by several authors [7,[17][18][19]. In the (slightly tetragonally distorted) octahedral symmetry of the Ru ion the 4d states are split into t 2g and e g .…”

Section: Magnetic Motifsmentioning

confidence: 99%

Magnetic properties of RuO2 and charge-magnetic interference in Bragg diffraction of circularly polarized x-rays

Lovesey

Khalyavin²,

Laan

2022

Phys. Rev. B

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Rutile-type RuO 2 likely supports a simple antiferromagnetic structure which can be verified by x-ray Bragg diffraction. Three magnetic motifs that do not break translation symmetry are explored in calculations of amplitudes suitable for diffraction enhanced by tuning the primary x-ray energy to a ruthenium atomic resonance. Coupling to x-ray helicity through a charge-magnetic interference is common to all motifs, together with magnetic and charge intensities in quadrature in the rotated channel of polarization. Necessary conditions for these diffraction phenomena are a centrosymmetric crystal structure, null magnetic propagation vector, and absence of a linear magnetoelectric effect. Published x-ray diffraction data for RuO 2 were analyzed by the authors against a magnetic motif that does not satisfy the conditions. A polarized neutron study of antiferromagnetic domains can be achieved with a sample that meets the stated crystal and magnetic symmetries.

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Local electronic structure of rutile RuO2

Cited by 24 publications

References 62 publications

Site-specific electronic and magnetic excitations of the skyrmion material Cu$_2$OSeO$_3$

Site-specific electronic and magnetic excitations of the skyrmion material Cu$_2$OSeO$_3$

Sol-gel deposited RuO2 film on lead-bismuth-silicate glass for cryogenic quantum computing

Magnetic properties of RuO2 and charge-magnetic interference in Bragg diffraction of circularly polarized x-rays

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