Angle-resolved photoemission studies of quantum materials
The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …
concepts such as symmetry and topology that have transformed our understanding of matter …
Colloquium: Planckian dissipation in metals
The appearance of the Planckian time τ Pl= ℏ/k BT is reviewed in both conventional and
unconventional metals. A pedagogical discussion of the various different timescales …
unconventional metals. A pedagogical discussion of the various different timescales …
Nematic Fermi fluids in condensed matter physics
Correlated electron fluids can exhibit a startling array of complex phases, among which one
of the more surprising is the electron nematic, a translationally invariant metallic phase with …
of the more surprising is the electron nematic, a translationally invariant metallic phase with …
Similarity of Scattering Rates in Metals Showing T-Linear Resistivity
Many exotic compounds, such as cuprate superconductors and heavy fermion materials,
exhibit a linear in temperature (T) resistivity, the origin of which is not well understood. We …
exhibit a linear in temperature (T) resistivity, the origin of which is not well understood. We …
High-order Van Hove singularities and their connection to flat bands
The flattening of single-particle band structures plays an important role in the quest for novel
quantum states of matter owing to the crucial role of interactions. Recent advances in theory …
quantum states of matter owing to the crucial role of interactions. Recent advances in theory …
Magic of high-order van Hove singularity
The van Hove singularity in density of states generally exists in periodic systems due to the
presence of saddle points of energy dispersion in momentum space. We introduce a new …
presence of saddle points of energy dispersion in momentum space. We introduce a new …
Hubbard and Hund exchange in transition metal oxides: Screening versus localization trends from constrained random phase approximation
In this work, we address the question of calculating the local effective Coulomb interaction
matrix in materials with strong electronic Coulomb interactions from first-principles. To this …
matrix in materials with strong electronic Coulomb interactions from first-principles. To this …
Differentiated roles of Lifshitz transition on thermodynamics and superconductivity in La2-xSrxCuO4
The effect of Lifshitz transition on thermodynamics and superconductivity in hole-doped
cuprates has been heavily debated but remains an open question. In particular, an observed …
cuprates has been heavily debated but remains an open question. In particular, an observed …
Hierarchy of Lifshitz Transitions in the Surface Electronic Structure of under Uniaxial Compression
E Abarca Morales, GR Siemann, A Zivanovic… - Physical Review Letters, 2023 - APS
We report the evolution of the electronic structure at the surface of the layered perovskite Sr
2 RuO 4 under large in-plane uniaxial compression, leading to anisotropic B 1 g strains of ϵ …
2 RuO 4 under large in-plane uniaxial compression, leading to anisotropic B 1 g strains of ϵ …
Strong Electron Correlations in the Normal State of the Iron-Based Superconductor Observed by Angle-Resolved Photoemission Spectroscopy
We investigate the normal state of the “11” iron-based superconductor FeSe 0.42 Te 0.58 by
angle-resolved photoemission. Our data reveal a highly renormalized quasiparticle …
angle-resolved photoemission. Our data reveal a highly renormalized quasiparticle …