Competition of Spinon Fermi Surface and Heavy Fermi Liquids states from the Periodic Anderson to the Hubbard model

Abstract

We study a model of correlated electrons coupled by tunnelling to a layer of itinerant metallic electrons, which allows to interpolate from a frustrated limit favorable to spin liquid states to a Kondo-lattice limit favorable to interlayer coherent heavy metallic states. We study the competition of the spinon fermi surface state and the interlayer coherent heavy Kondo metal that appears with increasing tunnelling. Employing a slave rotor mean-field approach, we obtain a phase diagram and describe two regimes where the spin liquid state is destroyed by weak interlayer tunnelling, (i) the Kondo limit in which the correlated electrons can be viewed as localized spin moments and (ii) near the Mott metal-insulator-transition where the spinon Fermi surface transitions continuously into a Fermi liquid. We study the shape of LDOS spectra of the putative spin liquid layer in the heavy Fermi liquid phase and describe the temperature dependence of its width arising from quasiparticle interactions and disorder effects throughout this phase diagram, in an effort to understand recent STM experiments of the candidate spin liquid 1T-TaSe${}_2$ residing on metallic 1H-TaSe${}_2$. Comparison of the shape and temperature dependence of the theoretical and experimental LDOS suggest that this system is either close to the localized Kondo limit, or in an intermediate coupling regime where the Kondo coupling and the Heisenberg exchange interaction are comparable.

References in corpus (7)

• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• U(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3
• Theory of a continuous Mott transition in two dimensions
• Gapless excitations in the ground state of 1T-TaS${}_2$
• The low-temperature highly correlated quantum phase in the charge-density-wave 1T-TaS_2 compound
• Self-consistent slave rotor mean field theory for strongly correlated systems
• Heat transport study of the spin liquid candidate 1T-TaS2

Cited by in corpus (11)

• The Orbitally Selective Mott Phase in Electron Doped Twisted TMDs: A Possible Realization of the Kondo Lattice Model
• Inducing and tuning Kondo screening in a narrow-electronic-band system
• Probing the Quantum Noise of the Spinon Fermi Surface with NV Centers
• Observation of a multitude of correlated states at the surface of bulk 1T-TaSe${}_2$ crystals
• Artificial heavy fermions in a van der Waals heterostructure
• Effective minimal model and unconventional spin-singlet pairing in Kagome superconductor CsV3Sb5
• Engineering Interlayer Hybridization in Energy Space via Dipolar Overlayers
• Temperature evolution of the Kondo peak beyond Fermi liquid theory
• Nature of metallic and insulating domains in the CDW system 1T-TaSe2
• Chiral spin liquid phase in an optical lattice at mean-field level
• Selective Kondo screening and strange metallicity by sliding Dirac semimetals