Iron pnictides and chalcogenides: a new paradigm for superconductivity
Superconductivity is a remarkably widespread phenomenon that is observed in most metals
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …
Strong correlations from Hund's coupling
Strong electronic correlations are often associated with the proximity of a Mott-insulating
state. In recent years however, it has become increasingly clear that the Hund's rule …
state. In recent years however, it has become increasingly clear that the Hund's rule …
Selective Mott physics as a key to iron superconductors
We show that electron-and hole-doped BaFe 2 As 2 are strongly influenced by a Mott
insulator that would be realized for half-filled conduction bands. Experiments show that …
insulator that would be realized for half-filled conduction bands. Experiments show that …
Evidence of Strong Correlations and Coherence-Incoherence Crossover <?format ?>in the Iron Pnictide Superconductor
Using resistivity, heat-capacity, thermal-expansion, and susceptibility measurements we
study the normal-state behavior of KFe 2 As 2. Both the Sommerfeld coefficient (γ≈ 103 mJ …
study the normal-state behavior of KFe 2 As 2. Both the Sommerfeld coefficient (γ≈ 103 mJ …
Non-Fermi liquid behaviour in a correlated flat-band pyrochlore lattice
Electronic correlation effects are manifested in quantum materials when either the on-site
Coulomb repulsion is large or the electron kinetic energy is small. The former is the …
Coulomb repulsion is large or the electron kinetic energy is small. The former is the …
[HTML][HTML] mVMC—Open-source software for many-variable variational Monte Carlo method
Abstract mVMC (many-variable Variational Monte Carlo) is an open-source software
package based on the variational Monte Carlo method applicable for a wide range of …
package based on the variational Monte Carlo method applicable for a wide range of …
Fractional power-law behavior and its origin in iron-chalcogenide and ruthenate superconductors: Insights from first-principles calculations
We perform realistic first-principles calculations of iron chalcogenides and ruthenate-based
materials to identify experimental signatures of Hund's-coupling-induced correlations in …
materials to identify experimental signatures of Hund's-coupling-induced correlations in …
Ab initio effective Hamiltonians for cuprate superconductors
Ab initio low-energy effective Hamiltonians of two typical high-temperature copper-oxide
superconductors, whose mother compounds are La 2 CuO 4 and HgBa 2 CuO 4, are …
superconductors, whose mother compounds are La 2 CuO 4 and HgBa 2 CuO 4, are …
Hundness versus Mottness in a three-band Hubbard–Hund model: On the origin of strong correlations in Hund metals
Hund metals are multi-orbital systems with moderate Coulomb interaction, U, among
charges and sizeable Hund's rule coupling, J (< U), that aligns the spins in different orbitals …
charges and sizeable Hund's rule coupling, J (< U), that aligns the spins in different orbitals …
Electronic inhomogeneity and phase fluctuation in one-unit-cell FeSe films
D Zhao, W Cui, Y Liu, G Gong, L Zhang, G Jia… - Nature …, 2024 - nature.com
One-unit-cell FeSe films on SrTiO3 substrates are of great interest owing to significantly
enlarged pairing gaps characterized by two coherence peaks at±10 meV and±20 meV. In …
enlarged pairing gaps characterized by two coherence peaks at±10 meV and±20 meV. In …