Pauli metallic ground-state in Hubbard clusters with Rashba spin-orbit coupling

Abstract

We study the "phase diagram" of a Hubbard plaquette with Rashba spin-orbit coupling. We show that the peculiar way in which Rashba coupling breaks the spin-rotational symmetry of the Hubbard model allows a mixing of singlet and triplet components in the ground-state that slows down and it changes the nature of the Mott transition and of the Mott insulating phases.

6 pages, 4 figures + Supplemental Material. References corrected in the last version

References in corpus (7)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Colloquium: Topological Band Theory
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Strongly spin-orbit coupled two-dimensional electron gas emerging near the surface of polar semiconductors
• Probing variations of the Rashba spin-orbit coupling at the nanometer scale
• Equivalence of Rashba-Hubbard and Hubbard chains
• Density inhomogeneities and Rashba spin-orbit coupling interplay in oxide interfaces

Cited by in corpus (6)

• Phase diagram of the square lattice Hubbard model with Rashba-type antisymmetric spin-orbit coupling
• Magnetism and metal-insulator transitions in the Rashba-Hubbard model
• Rashba-metal to Mott-insulator transition
• Doping Dependence of Spin-Momentum Locking in Bismuth-Based High-Temperature Cuprate Superconductors
• Weyl semimetallic, Néel, spiral, and vortex states in the Rashba-Hubbard model
• Weyl semimetallic state with antiferromagnetic order in Rashba-Hubbard model