BaBiO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e345" altimg="si1.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math>—From single crystals towards oxide topological insulators

Bouwmeester, Rosa Luca; Brinkman, Alexander

doi:10.1016/j.revip.2021.100056

Cited by 10 publications

(2 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…56 Here the O L 1 -edge feature appears at 40 eV, which is several eV red-shifted compared to previous reports of photoexcited holes in Fe 2 O 3 , Co 3 O 4 , and NiO, suggesting that YIG shows greater metal–oxygen bond covalency compared to hematite and that the photoexcited holes should have both O 2p and Fe 3d character. This is consistent with previous reports that identify a combination of O 2p ligand holes 81–95 and high valent 4+ Fe 96–101 as the primary redox active states for water splitting in a variety of metal oxide catalysts.…”

Section: Resultssupporting

confidence: 93%

Spin polarized electron dynamics enhance water splitting efficiency by yttrium iron garnet photoanodes: a new platform for spin selective photocatalysis

Gajapathy,

Bandaranayake,

Hruska

et al. 2024

Chem. Sci.

View full text Add to dashboard Cite

show abstract

Section: Resultssupporting

confidence: 93%

Spin polarized electron dynamics enhance water splitting efficiency by yttrium iron garnet photoanodes: a new platform for spin selective photocatalysis

Gajapathy,

Bandaranayake,

Hruska

et al. 2024

Chem. Sci.

View full text Add to dashboard Cite

show abstract

“…56 Here the O L 1 -edge feature appears at 40 eV, which is several eV red-shifted compared to previous reports of photoexcited holes in Fe 2 O 3 , Co 3 O 4 , and NiO, suggesting that YIG shows greater metal-oxygen bond covalency compared to hematite and that the photoexcited holes should have both O 2p and Fe 3d character. This is consistent with previous reports that identify a combination of O 2p ligand holes [81][82][83][84][85][86][87][88][89][90][91][92][93][94][95] and high valent 4+ Fe [96][97][98][99][100][101] as the primary redox active states for water splitting in a variety of metal oxide catalysts.…”

Section: Resultssupporting

confidence: 93%

Spin Polarized Electron Dynamics Enhance Water Splitting Efficiency by Yttrium Iron Garnet Photoanodes: A New Platform for Spin Selective Photocatalysis

Gajapathy,

Bandaranayake,

Hruska

et al. 2024

Preprint

View full text Add to dashboard Cite

This work presents a spectroscopic and photocatalytic comparison of water splitting using yttrium iron garnet (Y3Fe5O12, YIG) and hematite (α-Fe2O3) photoanodes. Despite similar electronic structures, YIG significantly outperforms widely studied hematite, displaying more than an order of magnitude increase in photocurrent density and a factor of two increase in Faradaic efficiency. Probing the charge and spin dynamics by ultrafast, surface-sensitive XUV spectroscopy reveals that the enhanced performance arises from 1) reduced polaron formation in YIG compared to hematite and 2) an intrinsic spin polarization of catalytic photocurrents in YIG. Ultrafast XUV measurements show a reduction in the formation of surface electron polarons compared to hematite due to site-dependent electronphonon coupling. This leads to spin polarized photocurrents in YIG where efficient charge separation occurs on the Td sub-lattice compared to fast trapping and electron/hole pair recombination on the Oh sub-lattice. These lattice-dependent dynamics result in a long-lived spin aligned hole population at the YIG surface, which is directly observed using XUV magnetic circular dichroism. Comparison of the Fe M2,3 and O L1-edges show that spin aligned holes are hybridized between O 2p and Fe 3d valence band states, and these holes are responsible for highly efficient, spin selective water oxidation by YIG. Together, these results point to YIG as a new platform for highly efficient, spin selective photocatalysis.

show abstract

Electric field and charge doping induced superconducting transition in 2D freestanding perovskite barium bismuthate

Cui

Qiao

et al. 2023

Sci. China Phys. Mech. Astron.

View full text Add to dashboard Cite

BaBiO3—From single crystals towards oxide topological insulators

Cited by 10 publications

References 77 publications

Spin polarized electron dynamics enhance water splitting efficiency by yttrium iron garnet photoanodes: a new platform for spin selective photocatalysis

Spin polarized electron dynamics enhance water splitting efficiency by yttrium iron garnet photoanodes: a new platform for spin selective photocatalysis

Spin Polarized Electron Dynamics Enhance Water Splitting Efficiency by Yttrium Iron Garnet Photoanodes: A New Platform for Spin Selective Photocatalysis

Electric field and charge doping induced superconducting transition in 2D freestanding perovskite barium bismuthate

Contact Info

Product

Resources

About