Electric Control of 2D Van Hove Singularity in Oxide Ultra‐Thin Films
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Materials"
DOI: 10.1002/adma.202207188
Abstract: Divergent density of states (DOS) can induce extraordinary phenomena such as significant enhancement of superconductivity and unexpected phase transitions. Moreover, van Hove singularities (VHSs) lead to divergent DOS in 2D systems. Despite recent interest in… read more here.
Keywords: control van; electric control; singularity oxide; hove singularity ... See more keywords
Experimental Observation of van Hove Singularities in Quasi‐1D MoO2 Nanotubes
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Electronic Materials"
DOI: 10.1002/aelm.201900005
Abstract: Currently, a major challenge of investigating nanostructured materials lies in demonstrating exotic properties and outstanding performance through control of the structure and morphology. In particular, the density of states of each sub‐band diverges when solid… read more here.
Keywords: van hove; experimental observation; moo2 nanotubes; quasi moo2 ... See more keywords
Twisted multilayer graphene exhibiting strong absorption bands induced by van Hove Singularities
Sign Up to like & getrecommendations! Published in 2018 at "Bulletin of Materials Science"
DOI: 10.1007/s12034-018-1648-5
Abstract: Twisted bilayer graphene exhibits several angle-dependent properties due to the emergence of the van Hove Singularities in its density of states. Among them, twist-angle-dependent optical absorption has gained a lot of attention due to its… read more here.
Keywords: absorption; van hove; graphene; hove singularities ... See more keywords
Observation of Van Hove Singularities and Temperature Dependence of Electrical Characteristics in Suspended Carbon Nanotube Schottky Barrier Transistors
Sign Up to like & getrecommendations! Published in 2018 at "Nano-Micro Letters"
DOI: 10.1007/s40820-017-0171-3
Abstract: AbstractA Van Hove singularity (VHS) is a singularity in the phonon or electronic density of states of a crystalline solid. When the Fermi energy is close to the VHS, instabilities will occur, which can give… read more here.
Keywords: schottky barrier; van hove; suspended carbon; nanotube schottky ... See more keywords
Investigating the Accuracy of Water Models through the Van Hove Correlation Function.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.1c00637
Abstract: We present molecular-simulation-based calculations of the Van Hove correlation function (VHF) of water using multiple modeling approaches: classical molecular dynamics with simple three-site nonpolarizable models, with a polarizable model, and with a reactive force field;… read more here.
Keywords: water; hove correlation; correlation function; van hove ... See more keywords
Discovery of a weak topological insulating state and van Hove singularity in triclinic RhBi2
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-22136-w
Abstract: Time reversal symmetric (TRS) invariant topological insulators (TIs) fullfil a paradigmatic role in the field of topological materials, standing at the origin of its development. Apart from TRS protected strong TIs, it was realized early… read more here.
Keywords: state; van hove; hove singularity; rhbi2 ... See more keywords
Chern insulators, van Hove singularities and topological flat bands in magic-angle twisted bilayer graphene
Sign Up to like & getrecommendations! Published in 2021 at "Nature Materials"
DOI: 10.1038/s41563-020-00911-2
Abstract: Magic-angle twisted bilayer graphene exhibits intriguing quantum phase transitions triggered by enhanced electron–electron interactions when its flat bands are partially filled. However, the phases themselves and their connection to the putative non-trivial topology of the… read more here.
Keywords: bilayer graphene; van hove; topology; flat bands ... See more keywords
Van Hove singularity arising from Mexican-hat-shaped inverted bands in the topological insulator Sn-doped Bi1.1Sb0.9Te2S
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.101.121115
Abstract: The optical properties of Sn-doped Bi1.1Sb0.9Te2S, the most bulk-insulating topological insulator thus far, have been examined at different temperatures over a broad frequency range. No Drude response is detected in the low-frequency range down to… read more here.
Keywords: van hove; 1sb0 9te2s; bi1 1sb0; doped bi1 ... See more keywords
Non-Born effects in the scattering of electrons in a conducting strip with a low concentration of impurities
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.102.134208
Abstract: We extend the theory of non-Born effects in resistivity $\rho$ of clean conducting tubes (developed in our previous work arXiv:1810.00426) to ``strips'' -- quasi-one-dimensional structures in 2D conductors. Here also an original Van Hove singularity… read more here.
Keywords: van hove; born effects; effects scattering; scattering electrons ... See more keywords
Effect of disorder on density of states and conductivity in higher-order Van Hove singularities in two-dimensional bands
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.075144
Abstract: We study systems with energy bands in two dimensions, hosting higher order Van Hove singularities (HOVHS) in the presence of disorder, using standard diagrammatic techniques for impurity averaging. In the clean limit, such singularities cause… read more here.
Keywords: order; higher order; van hove; order van ... See more keywords
Enhanced nematicity emerging from higher-order Van Hove singularities
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review B"
DOI: 10.1103/physrevb.107.184504
Abstract: Motivated by the experimental identification of a higher-order van Hove singularity (VHS) in AV$_3$Sb$_5$ kagome metals, we study electronic instabilities of 2D lattice models with higher-order VHS and flavor degeneracy. In contrast to conventional VHSs,… read more here.
Keywords: order van; nematicity emerging; higher order; order ... See more keywords