Detection of composite fermions by magnetic focusing

V. J. Goldman; B. Su; J. K. Jain

doi:10.1103/PhysRevLett.72.2065

Detection of composite fermions by magnetic focusing

V. J. Goldman, B. Su, J. K. Jain

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Abstract

We report on transverse magnetic focusing experiments in two-dimensional electron systems in the vicinity of Landau level filling factor ν=1/2. We observe quasiperiodic magnetic focusing peaks for ν<1/2 and no periodic structure for ν>1/2 in several double-constriction GaAs heterojunction samples. The quasiperiod and the direction of focusing in all of these samples are in good quantitative agreement with that expected from semiclassical transport by composite fermions of charge -e.

Original language	English (US)
Pages (from-to)	2065-2068
Number of pages	4
Journal	Physical review letters
Volume	72
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.72.2065
State	Published - 1994

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.72.2065

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title = "Detection of composite fermions by magnetic focusing",

abstract = "We report on transverse magnetic focusing experiments in two-dimensional electron systems in the vicinity of Landau level filling factor ν=1/2. We observe quasiperiodic magnetic focusing peaks for ν<1/2 and no periodic structure for ν>1/2 in several double-constriction GaAs heterojunction samples. The quasiperiod and the direction of focusing in all of these samples are in good quantitative agreement with that expected from semiclassical transport by composite fermions of charge -e.",

author = "Goldman, {V. J.} and B. Su and Jain, {J. K.}",

year = "1994",

doi = "10.1103/PhysRevLett.72.2065",

language = "English (US)",

volume = "72",

pages = "2065--2068",

journal = "Physical review letters",

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publisher = "American Physical Society",

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T1 - Detection of composite fermions by magnetic focusing

AU - Goldman, V. J.

AU - Su, B.

AU - Jain, J. K.

PY - 1994

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N2 - We report on transverse magnetic focusing experiments in two-dimensional electron systems in the vicinity of Landau level filling factor ν=1/2. We observe quasiperiodic magnetic focusing peaks for ν<1/2 and no periodic structure for ν>1/2 in several double-constriction GaAs heterojunction samples. The quasiperiod and the direction of focusing in all of these samples are in good quantitative agreement with that expected from semiclassical transport by composite fermions of charge -e.

AB - We report on transverse magnetic focusing experiments in two-dimensional electron systems in the vicinity of Landau level filling factor ν=1/2. We observe quasiperiodic magnetic focusing peaks for ν<1/2 and no periodic structure for ν>1/2 in several double-constriction GaAs heterojunction samples. The quasiperiod and the direction of focusing in all of these samples are in good quantitative agreement with that expected from semiclassical transport by composite fermions of charge -e.

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U2 - 10.1103/PhysRevLett.72.2065

DO - 10.1103/PhysRevLett.72.2065

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JO - Physical review letters

JF - Physical review letters

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ER -

Detection of composite fermions by magnetic focusing

Abstract

All Science Journal Classification (ASJC) codes

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