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

Reilly, D. J., Buehler, T. M., O'Brien, J. L., Hamilton, A. R., Dzurak, A. S., Clark, R. G., Kane, B. E., Pfeiffer, L. N. and West, K. W. (2002) Density-Dependent Spin Polarization in Ultra-Low -Disorder Quantum Wires. Physical Review Letters, 89 24: 1-4. doi:10.1103/PhysRevLett.89.246801

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Author Reilly, D. J.
Buehler, T. M.
O'Brien, J. L.
Hamilton, A. R.
Dzurak, A. S.
Clark, R. G.
Kane, B. E.
Pfeiffer, L. N.
West, K. W.
Title Density-Dependent Spin Polarization in Ultra-Low -Disorder Quantum Wires
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2002-11
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.89.246801
Open Access Status File (Publisher version)
Volume 89
Issue 24
Start page 1
End page 4
Total pages 4
Editor J. Sandweiss
Place of publication College Park, Maryland
Publisher The American Physical Society
Language eng
Subject 240203 Condensed Matter Physics - Electronic and Magnetic Properties; Superconductivity
CX
780102 Physical sciences
020404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Formatted 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) x 2e2/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.
Keyword condensed matter physics
conductance measurements
Q-Index Code CX

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
 
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