Spontaneous Magnetisation in a Quantum Wire

Details Spontaneous Magnetisation in a Quantum Wire Spontaneous Magnetisation in a Quantum Wire

2000-08-04

arxiv.org/abs/cond-mat/0008075v3

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 1 figure

Scientific paper

10.1088/0957-4484/11/4/329

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.

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