Odd-even spin effects and variation of g factor in a quasi-one-dimensional subband.
PHYS REV B
, Article 081301. 10.1103/PhysRevB.79.081301.
Four odd-even spin phenomena are observed in electronic transport through a quantum wire. They consistently imply that a quasi-one-dimensional system tends to a spontaneous spin polarization with the energy band of minority spin-up electrons being reluctant to populate, thus widening the spin gap in energy. Variation of g factor within a single subband is measured using a dc conductance technique, showing clear evidence of an oscillatory g value as 1D subbands are filled one by one with increasing carrier density.
|Title:||Odd-even spin effects and variation of g factor in a quasi-one-dimensional subband|
|Keywords:||aluminium compounds, carrier density, electric admittance, electron spin polarisation, energy gap, gallium arsenide, g-factor, III-V semiconductors, semiconductor heterojunctions, semiconductor quantum wires, SADDLE-POINT CONSTRICTION, ELECTRON-GAS, CONDUCTANCE, CHANNELS|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
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