Transport in cleaved-edge overgrowth wires

R. De Picciotto; H. L. Stormer; A. Yacoby; L. N. Pfeiffer; K. W. Baldwin; K. W. West

doi:10.1016/S1386-9477(00)00172-7

Transport in cleaved-edge overgrowth wires

R. De Picciotto, H. L. Stormer, A. Yacoby, L. N. Pfeiffer, K. W. Baldwin, K. W. West

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We report the results of 3 terminal measurements on a one-dimensional (1D) wire. By utilizing cleaved-edge overgrowth, we were able to vary the coupling between a 1D conductor and an adjacent two-dimensional electron gas (2DEG) strip attached to the central part of the wire. We study the 1D-2DEG coupling by controlling the width of the 2DEG strip. Ballistic transport along the wire persists for interaction regions as long as 6 μm. Thus, with our shortest interaction region (narrowest strip) of 2 μm, the wire remains almost undisturbed by the presence of the nearby 2DEG allowing a true 3 terminal measurement on a clean wire. Our observations also explain the origin of the non-universal conductance quantization of such 1D wires.

Original language	English (US)
Pages (from-to)	17-21
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	9
Issue number	1
DOIs	https://doi.org/10.1016/S1386-9477(00)00172-7
State	Published - Jan 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(00)00172-7

Cite this

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title = "Transport in cleaved-edge overgrowth wires",

abstract = "We report the results of 3 terminal measurements on a one-dimensional (1D) wire. By utilizing cleaved-edge overgrowth, we were able to vary the coupling between a 1D conductor and an adjacent two-dimensional electron gas (2DEG) strip attached to the central part of the wire. We study the 1D-2DEG coupling by controlling the width of the 2DEG strip. Ballistic transport along the wire persists for interaction regions as long as 6 μm. Thus, with our shortest interaction region (narrowest strip) of 2 μm, the wire remains almost undisturbed by the presence of the nearby 2DEG allowing a true 3 terminal measurement on a clean wire. Our observations also explain the origin of the non-universal conductance quantization of such 1D wires.",

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T1 - Transport in cleaved-edge overgrowth wires

AU - De Picciotto, R.

AU - Stormer, H. L.

AU - Yacoby, A.

AU - Pfeiffer, L. N.

AU - Baldwin, K. W.

AU - West, K. W.

PY - 2001/1

Y1 - 2001/1

N2 - We report the results of 3 terminal measurements on a one-dimensional (1D) wire. By utilizing cleaved-edge overgrowth, we were able to vary the coupling between a 1D conductor and an adjacent two-dimensional electron gas (2DEG) strip attached to the central part of the wire. We study the 1D-2DEG coupling by controlling the width of the 2DEG strip. Ballistic transport along the wire persists for interaction regions as long as 6 μm. Thus, with our shortest interaction region (narrowest strip) of 2 μm, the wire remains almost undisturbed by the presence of the nearby 2DEG allowing a true 3 terminal measurement on a clean wire. Our observations also explain the origin of the non-universal conductance quantization of such 1D wires.

AB - We report the results of 3 terminal measurements on a one-dimensional (1D) wire. By utilizing cleaved-edge overgrowth, we were able to vary the coupling between a 1D conductor and an adjacent two-dimensional electron gas (2DEG) strip attached to the central part of the wire. We study the 1D-2DEG coupling by controlling the width of the 2DEG strip. Ballistic transport along the wire persists for interaction regions as long as 6 μm. Thus, with our shortest interaction region (narrowest strip) of 2 μm, the wire remains almost undisturbed by the presence of the nearby 2DEG allowing a true 3 terminal measurement on a clean wire. Our observations also explain the origin of the non-universal conductance quantization of such 1D wires.

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Transport in cleaved-edge overgrowth wires

Abstract

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