Density-Dependent Spin Polarization in Ultra-Low-Disorder Quantum Wires

D. J. Reilly, T. M. Buehler, J. L. O’Brien, A. R. Hamilton, A. S. Dzurak, R. G. Clark, B. E. Kane, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

160 Scopus citations

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 [Formula presented]. A spin energy gap is indicated by the presence of a feature in the range [Formula presented] 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.

Original languageEnglish (US)
JournalPhysical review letters
Volume89
Issue number24
DOIs
StatePublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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