Mesoscopic transport properties of composite fermions

A. S. Sachrajda; Y. Feng; H. A. Carmona; A. K. Geim; P. C. Main; L. Eaves; C. T. Foxon

doi:10.1016/0039-6028(96)00352-4

Mesoscopic transport properties of composite fermions

A. S. Sachrajda, Y. Feng, H. A. Carmona, A. K. Geim, P. C. Main, L. Eaves, C. T. Foxon

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

Abstract

We have measured the magnetoresistance of quantum wires, junctions and rings near Landau filling factor ν = 1/2 to search for effects due to composite fermions (CF). We find evidence for semi-classical ballistic effects in the CF which are similar to those seen near zero magnetic field. However, we were not able to observe effects due to the phase coherence of the CF, even where their analogues were apparent in the electron transport. We attribute this to sample inhomogeneity.

Original language	English
Pages (from-to)	59-62
Number of pages	3
Journal	Surface Science
Volume	361-362
DOIs	https://doi.org/10.1016/0039-6028(96)00352-4
Publication status	Published - 20 Jul 1996

Keywords

Electrical transport
Electrical transport measurements
Gallium arsenide
Heterojunctions
Many body and quasi-particle theories
Semiconductor-semiconductor heterostructures

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10.1016/0039-6028(96)00352-4

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title = "Mesoscopic transport properties of composite fermions",

abstract = "We have measured the magnetoresistance of quantum wires, junctions and rings near Landau filling factor ν = 1/2 to search for effects due to composite fermions (CF). We find evidence for semi-classical ballistic effects in the CF which are similar to those seen near zero magnetic field. However, we were not able to observe effects due to the phase coherence of the CF, even where their analogues were apparent in the electron transport. We attribute this to sample inhomogeneity.",

keywords = "Electrical transport, Electrical transport measurements, Gallium arsenide, Heterojunctions, Many body and quasi-particle theories, Semiconductor-semiconductor heterostructures",

author = "Sachrajda, {A. S.} and Y. Feng and Carmona, {H. A.} and Geim, {A. K.} and Main, {P. C.} and L. Eaves and Foxon, {C. T.}",

note = "Uz033 Times Cited:0 Cited References Count:9",

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doi = "10.1016/0039-6028(96)00352-4",

language = "English",

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TY - JOUR

T1 - Mesoscopic transport properties of composite fermions

AU - Sachrajda, A. S.

AU - Feng, Y.

AU - Carmona, H. A.

AU - Geim, A. K.

AU - Main, P. C.

AU - Eaves, L.

AU - Foxon, C. T.

N1 - Uz033 Times Cited:0 Cited References Count:9

PY - 1996/7/20

Y1 - 1996/7/20

N2 - We have measured the magnetoresistance of quantum wires, junctions and rings near Landau filling factor ν = 1/2 to search for effects due to composite fermions (CF). We find evidence for semi-classical ballistic effects in the CF which are similar to those seen near zero magnetic field. However, we were not able to observe effects due to the phase coherence of the CF, even where their analogues were apparent in the electron transport. We attribute this to sample inhomogeneity.

AB - We have measured the magnetoresistance of quantum wires, junctions and rings near Landau filling factor ν = 1/2 to search for effects due to composite fermions (CF). We find evidence for semi-classical ballistic effects in the CF which are similar to those seen near zero magnetic field. However, we were not able to observe effects due to the phase coherence of the CF, even where their analogues were apparent in the electron transport. We attribute this to sample inhomogeneity.

KW - Electrical transport

KW - Electrical transport measurements

KW - Gallium arsenide

KW - Heterojunctions

KW - Many body and quasi-particle theories

KW - Semiconductor-semiconductor heterostructures

U2 - 10.1016/0039-6028(96)00352-4

DO - 10.1016/0039-6028(96)00352-4

M3 - Article

SN - 0039-6028

VL - 361-362

SP - 59

EP - 62

JO - Surface Science

JF - Surface Science

ER -

Mesoscopic transport properties of composite fermions

Abstract

Keywords

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