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   Articles with "flat band" as a keyword



Cataloging High‐Quality Two‐Dimensional van der Waals Materials with Flat Bands

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recommendations! Published in 2024 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202313067

Abstract: Benefited from the lower dimensionality compared to their 3D counterpart, 2D flat‐band systems provide cleaner lattice models, easier experimental verification, and higher tunability, which make the 2D van der Waals (vdW) system an ideal playground… read more here.

Keywords: flat band; van der; materials flat; band ... See more keywords

Tunable Multilevel Gate Oxide Capacitance and Flat‐Band Voltage Shift Characteristics by Filament Formation in Double‐Floating‐Gate Metal–Oxide–Semiconductor Capacitors

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recommendations! Published in 2023 at "Advanced Electronic Materials"

DOI: 10.1002/aelm.202201110

Abstract: Tunable multilevel gate oxide capacitance and flat‐band voltage shift characteristics in double‐floating‐gate metal–oxide–semiconductor (DFG‐MOS) capacitors are investigated for non‐volatile memory and programmable logic device applications. The DFG‐MOS capacitor with the structure of Ag(control gate)/CeO2(upper control… read more here.

Keywords: gate oxide; flat band; band voltage; gate ... See more keywords
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Interplay between the Kagome flat band and the Dirac cone in porous graphitic networks

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recommendations! Published in 2017 at "Carbon"

DOI: 10.1016/j.carbon.2017.08.040

Abstract: Abstract We have investigated the geometric and electronic structures of porous graphene consisting of triangular hydrocarbon molecules polymerized by oligoacene interconnects by density functional theory. The networks possess both Dirac cones and Kagome flat bands… read more here.

Keywords: dirac cone; kagome flat; interplay kagome; band ... See more keywords

WITHDRAWN: Determination of well flat band condition in thin film FDSOI transistors using C-V measurement for accurate parameter extraction

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recommendations! Published in 2017 at "Microelectronic Engineering"

DOI: 10.1016/j.mee.2017.05.016

Abstract: For advanced gate stacks, effective work function (WFeff) and equivalent oxide thickness (EOT) are fundamental parameters for technology optimization. On FDSOI transistors, and contrary to the bulk technologies, while EOT can be still extracted at… read more here.

Keywords: flat band; extraction; band condition; well flat ... See more keywords

Flat-band ferromagnetism of SU(N) Hubbard model on Tasaki lattices

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recommendations! Published in 2019 at "Science Bulletin"

DOI: 10.1016/j.scib.2019.08.013

Abstract: We investigate the para-ferro transition of the repulsive SU($N$) Hubbard model on one- and two-dimensional Tasaki lattices. Under certain restrictions for constructing localized many-particle ground states of flat-band ferromagnetism, the quantum strongly correlated electrons model… read more here.

Keywords: hubbard model; band ferromagnetism; flat band; tasaki ... See more keywords
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Flat-band voltage shift of 4H-SiC MOS capacitors induced by interface dipole layer formation at the oxide-semiconductor and oxide-oxide interfaces

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recommendations! Published in 2021 at "Solid-state Electronics"

DOI: 10.1016/j.sse.2021.108115

Abstract: Abstract The positive flat-band voltage (VFB) shifts of 4H-SiC (0001) MOS capacitors with Al2O3/SiO2 dielectric layers were systematically investigated. After nitridation, there was a negative shift of VFB due to the dipole layer at the… read more here.

Keywords: shift; mos capacitors; flat band; dipole layer ... See more keywords

Flat-Band-Induced Many-Body Interactions and Exciton Complexes in a Layered Semiconductor.

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recommendations! Published in 2022 at "Nano letters"

DOI: 10.1021/acs.nanolett.2c02965

Abstract: Interactions among a collection of particles generate many-body effects in solids that result in striking modifications of material properties. The heavy carrier mass that yields strong interactions and gate control of carrier density over a… read more here.

Keywords: flat band; many body; exciton complexes; band induced ... See more keywords

Flat-Band Electronic Structure and Interlayer Spacing Influence in Rhombohedral Four-Layer Graphene.

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recommendations! Published in 2018 at "Nano letters"

DOI: 10.1021/acs.nanolett.8b02530

Abstract: The stacking order of multilayer graphene significantly influences its electronic properties. The rhombohedral stacking sequence is predicted to introduce a flat band, which has high density of states and the enhanced Coulomb interaction between charge… read more here.

Keywords: interlayer spacing; electronic structure; graphene; band ... See more keywords

Valley-Selective Optical Absorption and Giant Exciton Binding Energy of Breathing Kagome Semiconductor with Nearly Flat Band.

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recommendations! Published in 2025 at "ACS nano"

DOI: 10.1021/acsnano.4c14020

Abstract: Endowed with topological flat band and dispersive Dirac cones, layered Kagome materials, which are expected to exhibit distinctive electronic and optical properties, have garnered significant attention in the forefrontier research of condensed matter physics. Using… read more here.

Keywords: breathing kagome; flat band; optical absorption; selective optical ... See more keywords

Emergence of the Flat Band and Kondo Resonance in the Superconducting T/H-NbS2 Heterostructure.

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recommendations! Published in 2025 at "ACS nano"

DOI: 10.1021/acsnano.5c00021

Abstract: By combining scanning tunneling microscopy and spectroscopy (STM/STS) with theoretical calculations, we investigate the interplay between the flat band and superconductivity in the T/H heterostructure of transition metal dichalcogenide (TMD). By applying electrical pulses to… read more here.

Keywords: flat band; band; kondo resonance; heterostructure ... See more keywords

Evidence of two-dimensional flat band at the surface of antiferromagnetic kagome metal FeSn

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recommendations! Published in 2021 at "Nature Communications"

DOI: 10.1038/s41467-021-25705-1

Abstract: The kagome lattice has long been regarded as a theoretical framework that connects lattice geometry to unusual singularities in electronic structure. Transition metal kagome compounds have been recently identified as a promising material platform to… read more here.

Keywords: surface; two dimensional; metal; band ... See more keywords