Charge compressibility and quantum magnetic phase transition in MoS${}_2$

Abstract

We investigate the ground-state properties of monolayer MoS${}_2$ incorporating the Coulomb interaction together with a short-range intervalley interaction between charged particles between two valleys within the Hartree-Fock approximation. We consider four variables as independent parameters, namely homogeneous charge (electron or hole) density, averaged dielectric constant, spin degree of freedom and finally the Hubbard repulsion coefficient which originates mostly from $4d$ orbits of Mo atoms. We find the electronic charge compressibility within the mean-field approximation and show that non-monotonic behavior of the compressibility as a function of carrier density which is rather different from those of the two-dimensional electron gas. We also explore a paramagnetic-to-ferromagnetic quantum phase transition for the wide range of the electron density in the parameter space.

arXiv comment9 pages, 4 figures

References in corpus (26)

• Atomically thin MoS2: A new direct-gap semiconductor
• Observation of Electron-Hole Puddles in Graphene Using a Scanning Single Electron Transistor
• Mechanical and Electronic Properties of MoS${}_2$ Nanoribbons and Their Defects
• Correlation energy and spin polarization in the 2D electron gas
• Pseudospin Magnetism in Graphene
• Quantum critical scaling in graphene
• Effective lattice Hamiltonian for monolayer MoS2 : Tailoring electronic structure with perpendicular electric and magnetic fields
• Coulomb Interactions and Ferromagnetism in Pure and Doped Graphene
• Magnetism in MoS2 induced by MeV proton irradiation
• Phase Diagram of the Low-Density Two-Dimensional Homogeneous Electron Gas
• Unexpected Behavior of the Local Compressibility Near the B=0 Metal-Insulator Transition
• Thermodynamic Signature of a Two-Dimensional Metal-Insulator Transition
• Density dependent exchange contribution to $\partial \mu /\partial n$ in extrinsic graphene
• Interactions and superconductivity in heavily doped MoS2
• Fermi Velocity Enhancement in Monolayer and Bilayer Graphene
• Quasiparticle self-energy and many-body effective mass enhancement in a two-dimensional electron liquid
• Electronic compressibility of a graphene bilayer
• Quantum Monte Carlo study of the ground state of the two-dimensional Fermi fluid
• The Hartree-Fock ground state of the three-dimensional electron gas
• Compressibility of bilayer graphene
• Electronic ground state properties of strained graphene
• Hartree-Fock Ground State Phase Diagram of Jellium
• Effect of disorder on the ground-state properties of graphene
• Analytic theory of correlation energy and spin polarization in the 2D electron gas
• Large conduction band and Fermi velocity spin splittings due to Coulomb interactions in single-layer MoS_{2}
• The compressibility of graphene

Cited by in corpus (6)

• Quasiparticle band-gap renormalization in doped monolayer MoS${}_2$
• Exciton routing in the heterostructure of TMD and paraelectrics
• Valley polarized magnetic state in hole-doped mono layers of transition metal dichalcogenides
• Characteristics of persistent spin current components in a quasi-periodic Fibonacci ring with spin-orbit interactions: Prediction of spin-orbit coupling and on-site energy
• Many-body exchange-correlation effects in MoS${}_2$ monolayer: The key role of nonlocal dielectric screening
• Strong intervalley correlation induced a magnetic order transition in monolayer ${\text{MoS}}_2$