The weak antilocalization and quantum scattering time in a two-dimensional electron gas in AlGaNGaN heterostructure

E. B. Olshanetsky; Z. D. Kvon; S. Sassine; J. C. Portal; H. I. Cho; J. H. Lee

doi:10.1063/1.2945883

The weak antilocalization and quantum scattering time in a two-dimensional electron gas in AlGaNGaN heterostructure

E. B. Olshanetsky, Z. D. Kvon, S. Sassine, J. C. Portal, H. I. Cho, J. H. Lee

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Abstract

In the present work, we report an experimental study of the low field magnetoresistance in two groups of AlGaNGaN samples with a two-dimensional electron gas. The characteristic transport parameters of the samples in these two groups are similar except for the value of the quantum scattering time, which is about three times larger in one group than in the other. In the magnetoresistance measured in the group of samples with a larger value of quantum scattering time, we find a well-pronounced weak antilocalization peak, whereas in the group with a smaller quantum scattering time only a weak localization is observed.

Original language	English
Article number	242112
Journal	Applied Physics Letters
Volume	92
Issue number	24
DOIs	https://doi.org/10.1063/1.2945883
State	Published - 2008

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title = "The weak antilocalization and quantum scattering time in a two-dimensional electron gas in AlGaNGaN heterostructure",

abstract = "In the present work, we report an experimental study of the low field magnetoresistance in two groups of AlGaNGaN samples with a two-dimensional electron gas. The characteristic transport parameters of the samples in these two groups are similar except for the value of the quantum scattering time, which is about three times larger in one group than in the other. In the magnetoresistance measured in the group of samples with a larger value of quantum scattering time, we find a well-pronounced weak antilocalization peak, whereas in the group with a smaller quantum scattering time only a weak localization is observed.",

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volume = "92",

journal = "Applied Physics Letters",

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T1 - The weak antilocalization and quantum scattering time in a two-dimensional electron gas in AlGaNGaN heterostructure

AU - Olshanetsky, E. B.

AU - Kvon, Z. D.

AU - Sassine, S.

AU - Portal, J. C.

AU - Cho, H. I.

AU - Lee, J. H.

PY - 2008

Y1 - 2008

N2 - In the present work, we report an experimental study of the low field magnetoresistance in two groups of AlGaNGaN samples with a two-dimensional electron gas. The characteristic transport parameters of the samples in these two groups are similar except for the value of the quantum scattering time, which is about three times larger in one group than in the other. In the magnetoresistance measured in the group of samples with a larger value of quantum scattering time, we find a well-pronounced weak antilocalization peak, whereas in the group with a smaller quantum scattering time only a weak localization is observed.

AB - In the present work, we report an experimental study of the low field magnetoresistance in two groups of AlGaNGaN samples with a two-dimensional electron gas. The characteristic transport parameters of the samples in these two groups are similar except for the value of the quantum scattering time, which is about three times larger in one group than in the other. In the magnetoresistance measured in the group of samples with a larger value of quantum scattering time, we find a well-pronounced weak antilocalization peak, whereas in the group with a smaller quantum scattering time only a weak localization is observed.

UR - http://www.scopus.com/inward/record.url?scp=45749149538&partnerID=8YFLogxK

U2 - 10.1063/1.2945883

DO - 10.1063/1.2945883

M3 - Article

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VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 242112

ER -

The weak antilocalization and quantum scattering time in a two-dimensional electron gas in AlGaNGaN heterostructure

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