Fermi-liquid instabilities at magnetic quantum phase transitions
This review discusses instabilities of the Fermi-liquid state of conduction electrons in metals
with particular emphasis on magnetic quantum critical points. Both existing theoretical …
with particular emphasis on magnetic quantum critical points. Both existing theoretical …
Quantum critical behavior in itinerant electron systems: Eliashberg theory and instability of a ferromagnetic quantum critical point
We consider the problem of fermions interacting with gapless long-wavelength collective
bosonic modes. The theory describes, among other cases, a ferromagnetic quantum-critical …
bosonic modes. The theory describes, among other cases, a ferromagnetic quantum-critical …
Correlation-induced triplet pairing superconductivity in graphene-based moiré systems
Motivated by the possible non-spin-singlet superconductivity in the magic-angle twisted
trilayer graphene experiment, we investigate the triplet-pairing superconductivity arising …
trilayer graphene experiment, we investigate the triplet-pairing superconductivity arising …
Instability of the quantum-critical point of itinerant ferromagnets
We study the stability of the quantum-critical point for itinerant ferromagnets commonly
described by the Hertz-Millis-Moriya (HMM) theory. We argue that in D≤ 3 long-range …
described by the Hertz-Millis-Moriya (HMM) theory. We argue that in D≤ 3 long-range …
Interplay between superconductivity and non-Fermi liquid at a quantum critical point in a metal. I. The model and its phase diagram at : The case
Near a quantum critical point in a metal, a strong fermion-fermion interaction, mediated by a
soft boson, acts in two different directions: it destroys fermionic coherence and it gives rise to …
soft boson, acts in two different directions: it destroys fermionic coherence and it gives rise to …
Superconductivity near a quantum-critical point: The special role of the first matsubara frequency
Near a quantum-critical point in a metal strong fermion-fermion interaction mediated by a
soft collective boson gives rise to incoherent, non-Fermi liquid behavior. It also often gives …
soft collective boson gives rise to incoherent, non-Fermi liquid behavior. It also often gives …
Superconductivity from repulsive interaction
The BCS theory of superconductivity named electron-phonon interaction as a glue that
overcomes Coulomb repulsion and binds fermions into pairs which then condense and …
overcomes Coulomb repulsion and binds fermions into pairs which then condense and …
Coherent superconductivity with a large gap ratio from incoherent metals
A mysterious incoherent metallic (IM) normal state with T-linear resistivity is ubiquitous
among strongly correlated superconductors. Recent progress with microscopic models …
among strongly correlated superconductors. Recent progress with microscopic models …
Sachdev-ye-kitaev superconductivity: Quantum kuramoto and generalized richardson models
The Sachdev-Ye-Kitaev (SYK) model has emerged as a new paradigm of non-Fermi-liquid
behavior. Here we investigate a possibility of having a superconducting off-diagonal long …
behavior. Here we investigate a possibility of having a superconducting off-diagonal long …
Special role of the first Matsubara frequency for superconductivity near a quantum critical point: Nonlinear gap equation below and spectral properties in real …
Near a quantum-critical point in a metal a strong fermion-fermion interaction, mediated by a
soft boson, destroys fermionic coherence and also gives rise to an attraction in one or more …
soft boson, destroys fermionic coherence and also gives rise to an attraction in one or more …