Electronic structure of triangular, hexagonal and round graphene flakes near the Fermi level [PDF]
New J. Phys. 10, 103015 (2008), 2008 The electronic shell structure of triangular, hexagonal and round graphene quantum dots (flakes) near the Fermi level has been studied using a tight-binding method. The results show that close to the Fermi level the shell structure of a triangular flake is that of free massless particles, and that triangles with an armchair edge show an additional ...
Heikki Heiskanen +2 more
arxiv +5 more sources
A full gap above the Fermi level: the charge density wave of monolayer VS2 [PDF]
Nature Communications, 2021 A charge density wave (CDW) normally creates a gap at the Fermi level, inducing a metal-insulator transition. Here, the authors report that a CDW gap resides in the unoccupied states but induces a topological metal-metal transition at the Fermi level in ...
Camiel van Efferen +17 more
doaj +4 more sources
Universal Fermi-Level Pinning in Transition-Metal Dichalcogenides [PDF]
The Journal of Physical Chemistry C, 2019 The journal of physical chemistry <Washington, DC> / C C, Nanomaterials and interfaces 123(9), 5411-5420 (2019).
Harold J.W. Zandvliet +8 more
europepmc +6 more sources
Improving stability in two-dimensional transistors with amorphous gate oxides by Fermi-level tuning. [PDF]
Nat Electron, 2022 Despite the enormous progress achieved during the past decade, nanoelectronic devices based on two-dimensional (2D) semiconductors still suffer from a limited electrical stability.
Knobloch T +9 more
europepmc +3 more sources
Luttinger theorem for the strongly correlated Fermi liquid of composite fermions [PDF]
Phys. Rev. Lett. 115, 186805 (2015), 2015 While an ordinary Fermi sea is perturbatively robust to interactions, the paradigmatic composite-fermion (CF) Fermi sea arises as a non-perturbative consequence of emergent gauge fields in a system where there was no Fermi sea to begin with. A mean-field picture suggests two Fermi seas, of composite fermions made from electrons or holes in the lowest ...
Balram, Ajit C. +2 more
arxiv +6 more sources
Composite Fermi liquids in the lowest Landau level [PDF]
Physical Review B, 2016 We study composite fermi liquid (CFL) states in the lowest Landau level (LLL) limit at a generic filling $ = \frac{1}{n}$. We begin with the old observation that, in compressible states, the composite fermion in the lowest Landau level should be viewed as a charge-neutral particle carrying vorticity. This leads to the absence of a Chern-Simons term in
Wang, Chong, Todadri, Senthil
openaire +7 more sources
Limitation of Fermi level shifts by polaron defect states in hematite photoelectrodes. [PDF]
Nat Commun, 2018 The optical band gap is a major selection criterion for an absorber in photocatalytic water splitting. Due to its ideal value hematite has been intensively investigated without reaching the expectation, yet.
Lohaus C, Klein A, Jaegermann W.
europepmc +2 more sources
Controlling energy levels and Fermi level en route to fully tailored energetics in organic semiconductors. [PDF]
Nat Commun, 2019 Simultaneous control over both the energy levels and Fermi level, a key breakthrough for inorganic electronics, has yet to be shown for organic semiconductors.
Warren R +6 more
europepmc +2 more sources
Electronic stripe patterns near the fermi level of tetragonal Fe(Se,S) [PDF]
npj Quantum Materials, 2023 FeSe1−x S x remains one of the most enigmatic systems of Fe-based superconductors. While much is known about the orthorhombic parent compound, FeSe, the tetragonal samples, FeSe1−x S x with x > 0.17, remain relatively unexplored.
M. Walker +15 more
doaj +2 more sources
Non-Fermi liquid signatures in the Hubbard Model due to van Hove singularities [PDF]
PRB 82, 155126 (2010), 2010 When a van-Hove singularity is located in the vicinity of the Fermi level, the electronic scattering rate acquires a non-analytic contribution. This invalidates basic assumptions of Fermi liquid theory and within perturbative treatments leads to a non-Fermi liquid self-energy and transport properties.Such anomalies are shown to also occur in the ...
A. A. Abrikosov +5 more
arxiv +3 more sources