Temperature-dependent 0.7 structure in the conductance of cleaved-edge-overgrowth one-dimensional wires

R. De Picciotto; L. N. Pfeiffer; K. W. Baldwin; K. W. West

doi:10.1103/PhysRevB.72.033319

Temperature-dependent 0.7 structure in the conductance of cleaved-edge-overgrowth one-dimensional wires

R. De Picciotto, L. N. Pfeiffer, K. W. Baldwin, K. W. West

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27 Scopus citations

Abstract

We study the temperature dependence of the conductance in clean one-dimensional wires fabricated by cleaved-edge overgrowth in molecular beam epitaxy. At elevated temperatures, a conductance peculiarity occurs at low electron densities. The linear conductance dwells at a value of ∼70% of its plateau value over a finite density range. We show that this so-called 0.7 structure arises as the electrons in the wire undergo a transition from a degenerate into a nondegenerate liquid.

Original language	English (US)
Article number	033319
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.72.033319
State	Published - Jul 15 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.033319

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abstract = "We study the temperature dependence of the conductance in clean one-dimensional wires fabricated by cleaved-edge overgrowth in molecular beam epitaxy. At elevated temperatures, a conductance peculiarity occurs at low electron densities. The linear conductance dwells at a value of ∼70% of its plateau value over a finite density range. We show that this so-called 0.7 structure arises as the electrons in the wire undergo a transition from a degenerate into a nondegenerate liquid.",

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AU - Pfeiffer, L. N.

AU - Baldwin, K. W.

AU - West, K. W.

PY - 2005/7/15

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N2 - We study the temperature dependence of the conductance in clean one-dimensional wires fabricated by cleaved-edge overgrowth in molecular beam epitaxy. At elevated temperatures, a conductance peculiarity occurs at low electron densities. The linear conductance dwells at a value of ∼70% of its plateau value over a finite density range. We show that this so-called 0.7 structure arises as the electrons in the wire undergo a transition from a degenerate into a nondegenerate liquid.

AB - We study the temperature dependence of the conductance in clean one-dimensional wires fabricated by cleaved-edge overgrowth in molecular beam epitaxy. At elevated temperatures, a conductance peculiarity occurs at low electron densities. The linear conductance dwells at a value of ∼70% of its plateau value over a finite density range. We show that this so-called 0.7 structure arises as the electrons in the wire undergo a transition from a degenerate into a nondegenerate liquid.

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Temperature-dependent 0.7 structure in the conductance of cleaved-edge-overgrowth one-dimensional wires

Abstract

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