Revealing spinons by proximity effect

Abstract

The ghost-Gutzwiller variational wavefunction within the Gutzwiller approximation is shown to stabilize a genuine paramagnetic Mott insulator in the half-filled single-band Hubbard model. This phase hosts quasiparticles that are crucial to the paramagnetic response without showing up in the single-particle spectrum, and, as such, they can be legitimately regarded as an example of Anderson's spinons. We demonstrate that these spinons at the interface with a metal reacquire charge by proximity effect and thus reemerge in the spectrum as a heavy-fermion band.

8 pages, 10 figures and appendices

References in corpus (34)

• Quantum Spin Liquids
• Quantum Spin Liquids
• On the stability of U(1) spin liquids in two dimensions
• Topological order, emergent gauge fields, and Fermi surface reconstruction
• Gapless excitations in the ground state of 1T-TaS${}_2$
• Kondo proximity effect: How does a metal penetrate into a Mott insulator?
• Magnetic field induced intermediate quantum spin-liquid with a spinon Fermi surface
• Gutzwiller description of non-magnetic Mott insulators: a dimer lattice model
• Mott insulators with boundary zeros
• Heat transport study of the spin liquid candidate 1T-TaS2
• Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe${}_2$
• Emergent Bloch Excitations in Mott Matter
• Exciton Mott transition revisited
• Kondo screening in a charge-insulating spinon metal
• Field dependent quasiparticles in the infinite dimensional Hubbard model
• How to measure a spinon Fermi surface
• Field dependent quasiparticles in models of strongly correlated electrons
• Quantum-embedding description of the Anderson lattice model with the ghost Gutzwiller Approximation
• Strongly correlated metal interfaces in the Gutzwiller approximation
• Accuracy of ghost-rotationally-invariant slave-boson and dynamical mean field theory as a function of the impurity-model bath size
• Spin-Peierls instability of the U(1) Dirac spin liquid
• Probing quantum spin liquids with a quantum twisting microscope
• Efficient computational screening of strongly correlated materials -- Multi-orbital phenomenology within the ghost Gutzwiller approximation
• Non-equilibrium and non-homogeneous phenomena around a first-order quantum phase transition
• Edge zeros and boundary spinons in topological Mott insulators
• Quantum fluctuations beyond the Gutzwiller approximation
• Accuracy of ghost-rotationally-invariant slave-boson theory for multiorbital Hubbard models and realistic materials
• Operatorial formulation of the ghost rotationally-invariant slave-Boson theory
• Time-dependent ghost-Gutzwiller non-equilibrium dynamics
• Quantum embedding for molecules using auxiliary particles -- The ghost Gutzwiller Ansatz
• Converting electrons into emergent fermions at a superconductor-Kitaev spin liquid interface
• Instability of the $U(1)$ spin liquid with a large spinon Fermi surface in the Heisenberg-ring exchange model on the triangular lattice
• Metal-Mott insulator interfaces
• Charge self-consistent density functional theory plus ghost rotationally-invariant slave-boson theory for correlated materials

Cited by in corpus (5)

• Band structure picture for topology in strongly correlated systems with the ghost Gutzwiller ansatz
• Signatures of the Fermi surface reconstruction of a doped Mott insulator in a slab geometry
• Ghost Embedding Bridging Chemistry and One-Body Theories
• Linear Foundation Model for Quantum Embedding: Data-Driven Compression of the Ghost Gutzwiller Variational Space
• Strengthened correlations near [110] edges of $d$-wave superconductors in the t-J model with the Gutzwiller approximation