Reflection of ballistic electrons from diffusive regions

A. K. Geim; P. C. Main; R. Taboryski; E. Veje; H. A. Carmona; C. V. Brown; T. J. Foster; L. Eaves

doi:10.1103/PhysRevB.49.2265

Reflection of ballistic electrons from diffusive regions

A. K. Geim, P. C. Main, R. Taboryski, E. Veje, H. A. Carmona, C. V. Brown, T. J. Foster, L. Eaves

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Abstract

We have investigated reflection of edge states from the boundary between a disordered region and a high-mobility region of a two-dimensional electron gas. α-particle bombardment has been employed to reduce selectively the mobility. We observe an exponential increase in reflection of the innermost edge state from the disordered region as the temperature decreases. The results are explained in terms of the Milne reflection of electrons which are elastically scattered back before thermalization can occur. © 1994 The American Physical Society.

Original language	English
Pages (from-to)	2265-2268
Number of pages	3
Journal	Physical Review B: covering condensed matter and materials physics
Volume	49
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.49.2265
Publication status	Published - 1994

Keywords

quantum transport
low-temperatures
magnetic-fields
heterostructures
conductors
scattering
contacts

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10.1103/PhysRevB.49.2265

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title = "Reflection of ballistic electrons from diffusive regions",

abstract = "We have investigated reflection of edge states from the boundary between a disordered region and a high-mobility region of a two-dimensional electron gas. α-particle bombardment has been employed to reduce selectively the mobility. We observe an exponential increase in reflection of the innermost edge state from the disordered region as the temperature decreases. The results are explained in terms of the Milne reflection of electrons which are elastically scattered back before thermalization can occur. {\textcopyright} 1994 The American Physical Society.",

keywords = "quantum transport, low-temperatures, magnetic-fields, heterostructures, conductors, scattering, contacts",

author = "Geim, {A. K.} and Main, {P. C.} and R. Taboryski and E. Veje and Carmona, {H. A.} and Brown, {C. V.} and Foster, {T. J.} and L. Eaves",

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year = "1994",

doi = "10.1103/PhysRevB.49.2265",

language = "English",

volume = "49",

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T1 - Reflection of ballistic electrons from diffusive regions

AU - Geim, A. K.

AU - Main, P. C.

AU - Taboryski, R.

AU - Veje, E.

AU - Carmona, H. A.

AU - Brown, C. V.

AU - Foster, T. J.

AU - Eaves, L.

N1 - Mw694 Times Cited:10 Cited References Count:27

PY - 1994

Y1 - 1994

N2 - We have investigated reflection of edge states from the boundary between a disordered region and a high-mobility region of a two-dimensional electron gas. α-particle bombardment has been employed to reduce selectively the mobility. We observe an exponential increase in reflection of the innermost edge state from the disordered region as the temperature decreases. The results are explained in terms of the Milne reflection of electrons which are elastically scattered back before thermalization can occur. © 1994 The American Physical Society.

AB - We have investigated reflection of edge states from the boundary between a disordered region and a high-mobility region of a two-dimensional electron gas. α-particle bombardment has been employed to reduce selectively the mobility. We observe an exponential increase in reflection of the innermost edge state from the disordered region as the temperature decreases. The results are explained in terms of the Milne reflection of electrons which are elastically scattered back before thermalization can occur. © 1994 The American Physical Society.

KW - quantum transport

KW - low-temperatures

KW - magnetic-fields

KW - heterostructures

KW - conductors

KW - scattering

KW - contacts

U2 - 10.1103/PhysRevB.49.2265

DO - 10.1103/PhysRevB.49.2265

M3 - Article

SN - 0163-1829

VL - 49

SP - 2265

EP - 2268

JO - Physical Review B: covering condensed matter and materials physics

JF - Physical Review B: covering condensed matter and materials physics

IS - 3

ER -

Reflection of ballistic electrons from diffusive regions

Abstract

Keywords

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