Image-potential-induced spin-orbit interaction in one-dimensional electron systems

Abstract

We study the spin-orbit interaction effects in a one-dimensional electron system that result from the image charges in a nearby metallic gate. The nontrivial property of the image-potential-induced spin-orbit interaction (iSOI) is that it directly depends on the electron density because of which a positive feedback arises between the electron density and the iSOI magnitude. As a result, the system becomes unstable against the density fluctuations under certain conditions. In addition, the iSOI contributes to the electron-electron interaction giving rise to strong changes in electron correlations and collective excitation spectra. We trace the evolution of the spectrum of the collective excitations and their spin-charge structures with the change in the iSOI parameter. One out of two collective modes softens as the iSOI amplitude grows to become unstable at its critical value. Interestingly, this mode evolves from a pure spin excitation to a pure charge one. At the critical point its velocity turns to zero together with the charge stiffness.

6 pages, 5 figures

References in corpus (5)

• New Perspectives for Rashba Spin-Orbit Coupling
• Spin-selective Peierls transition in interacting one-dimensional conductors with spin-orbit interaction
• Spin-orbit induced spin-density wave in a quantum wire
• Spin-orbit splitting of image states
• Spin Correlations in Quantum Wires

Cited by in corpus (12)

• Link between supercurrent diode and anomalous Josephson effect revealed by gate-controlled interferometry
• Spin-orbit-driven electron pairing in two dimensions
• Pair spin-orbit interaction in low-dimensional electron systems
• The spin-orbit mechanism of electron pairing in quantum wires
• Electron correlations due to pair spin-orbit interaction in 2D electron systems
• Coulomb pairing of electrons in thin films with strong spin-orbit interaction
• Dynamic transport in a quantum wire driven by spin-orbit interaction
• Dynamics of one-dimensional electrons with broken spin-charge separation
• Spin-dependent electron-electron interaction in Rashba materials
• Electron pairs bound by the spin-orbit interaction in 2D gated Rashba materials with two-band spectrum
• Bound electron pairs formed by the spin-orbit interaction in 2D gated structures
• Electron Interactions in Rashba Materials