The Kondo Temperature of a Two-dimensional Electron Gas with Rashba Spin-orbit Coupling

Abstract

We use the Hirsch-Fye quantum Monte Carlo method to study the single magnetic impurity problem in a two-dimensional electron gas with Rashba spin-orbit coupling. We calculate the spin susceptibility for various values of spin-orbit coupling, Hubbard interaction, and chemical potential. The Kondo temperatures for different parameters are estimated by fitting the universal curves of spin susceptibility. We find that the Kondo temperature is almost a linear function of Rashba spin-orbit energy when the chemical potential is close to the edge of the conduction band. When the chemical potential is far away from the band edge, the Kondo temperature is independent of the spin-orbit coupling. These results demonstrate that, for single impurity problem in this system, the most important reason to change the Kondo temperature is the divergence of density of states near the band edge, and the divergence is induced by the Rashba spin-orbit coupling.

5 pages, 4 figures, 2 references added

References in corpus (5)

• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Magnetic Impurities in Graphene
• Long-range ferromagnetic correlations between Anderson impurities in a semiconductor host
• Spin-spin interaction in the bulk of topological insulators

Cited by in corpus (7)

• Kondo effect in a quantum wire with spin-orbit coupling
• Impact of the Rashba Spin Orbit Coupling on $f$-electron Materials
• Rashba induced Kondo screening of a magnetic impurity in two-dimensional superconductor
• Tunable correlation effects of magnetic impurities by the cubic Rashba spin-orbit couplings
• Spin-orbit coupling effects over thermoelectric transport properties in quantum dots
• Anisotropic Kondo screening induced by spin-orbit coupling in quantum wires
• Influence of Rashba spin-orbit coupling on the 0-$\pi$ transition and Kondo temperature in 1D superconductors