Metal-insulator transitions

M Imada, A Fujimori, Y Tokura - Reviews of modern physics, 1998 - APS
Metal-insulator transitions are accompanied by huge resistivity changes, even over tens of
orders of magnitude, and are widely observed in condensed-matter systems. This article …

Angle-resolved photoemission studies of the cuprate superconductors

A Damascelli, Z Hussain, ZX Shen - Reviews of modern physics, 2003 - APS
The last decade witnessed significant progress in angle-resolved photoemission
spectroscopy (ARPES) and its applications. Today, ARPES experiments with 2-meV energy …

Rich nature of Van Hove singularities in Kagome superconductor CsV3Sb5

Y Hu, X Wu, BR Ortiz, S Ju, X Han, J Ma… - Nature …, 2022 - nature.com
The recently discovered layered kagome metals AV3Sb5 (A= K, Rb, Cs) exhibit diverse
correlated phenomena, which are intertwined with a topological electronic structure with …

Emergence of New van Hove Singularities in the Charge Density Wave State of a Topological Kagome Metal

S Cho, H Ma, W Xia, Y Yang, Z Liu, Z Huang, Z Jiang… - Physical Review Letters, 2021 - APS
Quantum materials with layered kagome structures have drawn considerable attention due
to their unique lattice geometry, which gives rise to flat bands together with Dirac-like …

Overdoping graphene beyond the van Hove singularity

P Rosenzweig, H Karakachian, D Marchenko… - Physical Review Letters, 2020 - APS
At very high doping levels the van Hove singularity in the π* band of graphene becomes
occupied and exotic ground states possibly emerge, driven by many-body interactions …

Flat bands in slightly twisted bilayer graphene: Tight-binding calculations

E Suárez Morell, JD Correa, P Vargas, M Pacheco… - Physical Review B …, 2010 - APS
The presence of flat bands near Fermi level has been proposed as an explanation for high
transition temperature superconductors. The bands of graphite are extremely sensitive to …

Pairing symmetry in cuprate superconductors

CC Tsuei, JR Kirtley - Reviews of Modern Physics, 2000 - APS
Pairing symmetry in the cuprate superconductors is an important and controversial topic.
The recent development of phase-sensitive tests, combined with the refinement of several …

Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides

A Carvalho, RM Ribeiro, AH Castro Neto - Physical Review B—Condensed …, 2013 - APS
We have studied the optical conductivity of two-dimensional (2D) semiconducting transition
metal dichalcogenides using ab initio density functional theory. We find that this class of …

Quantum-critical theory of the spin-fermion model and its application to cuprates: Normal state analysis

A Abanov, AV Chubukov, J Schmalian - Advances in Physics, 2003 - Taylor & Francis
We present the full analysis of the normal state properties of the spin-fermion model near the
antiferromagnetic instability in two dimensions. The model describes low-energy fermions …

LDA energy bands, low-energy hamiltonians, t′, t ″, t⊥(k), and J⊥

OK Andersen, AI Liechtenstein, O Jepsen… - Journal of Physics and …, 1995 - Elsevier
We describe the LDA band structre of YBa2Cu3O7 in the ϵF±2 eV range using orbital
projections and compare with YBa2Cu4O8. Then, the high-energy and chain-related …