Spontaneous Magnetisation in a Quantum Wire

Abstract

An existence of predominant symmetrical spin configuration (spin polarised phase) and "diluted" density of states (pseudo-gap) in a layer under the Fermi level in a quantum wire is predicted. The condition of cross-over from non-polarised phase to polarised one was derived. The transition occurs for sufficiently low electron density in a wire and is accompanied by an acute decrease of electron density of states near the Fermi level.It may result in a corresponding decrease of conductance. A similar effect may exist in a two-dimensional electron gas.

8 pages, 1 figure

Cited by in corpus (4)

• Spin Depolarization in Quantum Wires Polarized Spontaneously in a Zero Magnetic Field
• Exchange instabilities in electron systems: Bloch versus Stoner Ferromagnetism
• Pseudo-gap and spin polarization in a two-dimensional electron gas
• Effect of Screening on Spin Polarization in a Two-Dimensional Electron Gas