Ballistic electron transport beyond 100 microm IN 2D electron systems

J. Spector; H. L. Stormer; K. W. Baldwin; L. N. Pfeiffer; K. W. West

doi:10.1016/0039-6028(90)90310-5

Ballistic electron transport beyond 100 microm IN 2D electron systems

J. Spector, H. L. Stormer, K. W. Baldwin, L. N. Pfeiffer, K. W. West

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

64 Scopus citations

Abstract

We have observed ballistic electron transport beyond 100 microm in the 2D electron system of an ultra-high mobility GaAs(AlGa)As heterostructure employing a magnetic electron focusing technique through wide point contacts. The amplitude of the characteristic magneto-oscillations is found to depend exponentially on electron propagation distance with a decay length λ_a = 15 microm. λ_a differs by about a factor of 2 from the mobility mean free path of 28 microm. This may indicate the determination of a different angular average of scattering events in focusing experiments as compared to standard mobility measurements.

Original language	English (US)
Pages (from-to)	283-285
Number of pages	3
Journal	Surface Science
Volume	228
Issue number	1-3
DOIs	https://doi.org/10.1016/0039-6028(90)90310-5
State	Published - Apr 1 1990
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(90)90310-5

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title = "Ballistic electron transport beyond 100 microm IN 2D electron systems",

abstract = "We have observed ballistic electron transport beyond 100 microm in the 2D electron system of an ultra-high mobility GaAs(AlGa)As heterostructure employing a magnetic electron focusing technique through wide point contacts. The amplitude of the characteristic magneto-oscillations is found to depend exponentially on electron propagation distance with a decay length λa = 15 microm. λa differs by about a factor of 2 from the mobility mean free path of 28 microm. This may indicate the determination of a different angular average of scattering events in focusing experiments as compared to standard mobility measurements.",

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T1 - Ballistic electron transport beyond 100 microm IN 2D electron systems

AU - Spector, J.

AU - Stormer, H. L.

AU - Baldwin, K. W.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1990/4/1

Y1 - 1990/4/1

N2 - We have observed ballistic electron transport beyond 100 microm in the 2D electron system of an ultra-high mobility GaAs(AlGa)As heterostructure employing a magnetic electron focusing technique through wide point contacts. The amplitude of the characteristic magneto-oscillations is found to depend exponentially on electron propagation distance with a decay length λa = 15 microm. λa differs by about a factor of 2 from the mobility mean free path of 28 microm. This may indicate the determination of a different angular average of scattering events in focusing experiments as compared to standard mobility measurements.

AB - We have observed ballistic electron transport beyond 100 microm in the 2D electron system of an ultra-high mobility GaAs(AlGa)As heterostructure employing a magnetic electron focusing technique through wide point contacts. The amplitude of the characteristic magneto-oscillations is found to depend exponentially on electron propagation distance with a decay length λa = 15 microm. λa differs by about a factor of 2 from the mobility mean free path of 28 microm. This may indicate the determination of a different angular average of scattering events in focusing experiments as compared to standard mobility measurements.

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SP - 283

EP - 285

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Ballistic electron transport beyond 100 microm IN 2D electron systems

Abstract

All Science Journal Classification (ASJC) codes

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