Flat bands, strange metals and the Kondo effect

JG Checkelsky, BA Bernevig, P Coleman, Q Si… - Nature Reviews …, 2024 - nature.com
Flat-band materials such as the kagome metals or moiré superlattices are of intense current
interest. Flat bands can result from the electron motion on numerous (special) lattices and …

Quantum phases driven by strong correlations

S Paschen, Q Si - Nature Reviews Physics, 2021 - nature.com
It has long been thought that strongly correlated systems are adiabatically connected to their
non-interacting counterpart. Recent developments have highlighted the fallacy of this …

Unconventional Fermi surface in an insulating state

BS Tan, YT Hsu, B Zeng, MC Hatnean, N Harrison… - Science, 2015 - science.org
Insulators occur in more than one guise; a recent finding was a class of topological
insulators, which host a conducting surface juxtaposed with an insulating bulk. Here, we …

Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na2BaCo(PO4)2

J Sheng, L Wang, A Candini, W Jiang, L Huang… - Proceedings of the …, 2022 - pnas.org
An interplay of geometrical frustration and strong quantum fluctuations in a spin-1/2
triangular-lattice antiferromagnet (TAF) can lead to exotic quantum states. Here, we report …

Colloquium: Unconventional fully gapped superconductivity in the heavy-fermion metal

M Smidman, O Stockert, EM Nica, Y Liu, H Yuan… - Reviews of Modern …, 2023 - APS
The heavy-fermion metal CeCu 2 Si 2 was the first discovered unconventional, non-phonon-
mediated superconductor and, for a long time, was believed to exhibit single-band d-wave …

Strongly correlated materials

E Morosan, D Natelson, AH Nevidomskyy… - Advanced …, 2012 - Wiley Online Library
Strongly correlated materials are profoundly affected by the repulsive electron‐electron
interaction. This stands in contrast to many commonly used materials such as silicon and …

Exploring heavy fermions from macroscopic to microscopic length scales

S Wirth, F Steglich - Nature Reviews Materials, 2016 - nature.com
Strongly correlated systems present fundamental challenges, especially in materials in
which electronic correlations cause a strong increase of the effective mass of the charge …

Translationally invariant non-fermi-liquid metals with critical fermi surfaces: Solvable models

D Chowdhury, Y Werman, E Berg, T Senthil - Physical Review X, 2018 - APS
We construct examples of translationally invariant solvable models of strongly correlated
metals, composed of lattices of Sachdev-Ye-Kitaev dots with identical local interactions …

Unconventional superconductivity in heavy-fermion compounds

BD White, JD Thompson, MB Maple - Physica C: superconductivity and its …, 2015 - Elsevier
Over the past 35 years, research on unconventional superconductivity in heavy-fermion
systems has evolved from the surprising observations of unprecedented superconducting …

Monte Carlo studies of quantum critical metals

E Berg, S Lederer, Y Schattner… - Annual Review of …, 2019 - annualreviews.org
Metallic quantum critical phenomena are believed to play a key role in many strongly
correlated materials, including high-temperature superconductors. Theoretically, the …