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Quantum Chemistry

Density-dependent spin polarization in ultra-low-disorder quantum wires.

PubMed

Authors: Reilly DJ, Buehler TM, O'Brien JL, Hamilton AR, Dzurak AS, Clark RG, Kane BE, Pfeiffer LN, West KW

Year

2002

Paper ID

13122

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

101

Citations

164

Abstract

There is controversy as to whether a one-dimensional (1D) electron gas can spin polarize in the absence of a magnetic field. Together with a simple model, we present conductance measurements on ultra-low-disorder quantum wires supportive of a spin polarization at B=0. A spin energy gap is indicated by the presence of a feature in the range (0.5-0.7)x2e(2)/h in conductance data. Importantly, it appears that the spin gap is not constant but a function of the electron density. Data obtained using a bias spectroscopy technique are consistent with the spin gap widening further as the Fermi level is increased.

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This paper contributes to the Quantum Chemistry research area in the Quantum Articles archive.
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There is controversy as to whether a one-dimensional (1D) electron gas can spin polarize in the absence of a magnetic field.

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References & Citation Signals

[1] DOI https://doi.org/10.1103/PhysRevLett.89.246801 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/12484968/

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