High-Field Magnetoresistance in a Periodically Modulated 2-Dimensional Electron-Gas

A K Geim; R Taboryski; A Kristensen; S V Dubonos; P E Lindelof

High-Field Magnetoresistance in a Periodically Modulated 2-Dimensional Electron-Gas

A K Geim
, R Taboryski
, A Kristensen
, S V Dubonos
, P E Lindelof

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

Abstract

We have extended earlier measurements of the magnetoresistance in a periodically modulated two-dimensional electron gas to high magnetic fields, where the cyclotron radius, r(c), is much smaller than the period, a, of modulation. A giant nonoscillatory magnetoresistance was found to arise beyond the range of low-field (Weiss) oscillations periodic in 1/B. Its value in a magnetic field of a few tesla may exceed the zero-field resistance value, rho-0, by 1 to 2 orders of magnitude. This result is in agreement with the semiclassical theory by Beenakker, if a modulation of the electron mobility is taken into account.

Original language	English
Pages (from-to)	4324-4327
Number of pages	4
Journal	Physical Review B
Volume	46
Issue number	7
Publication status	Published - 1992

Keywords

superlattice
oscillations
orbits

Cite this

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title = "High-Field Magnetoresistance in a Periodically Modulated 2-Dimensional Electron-Gas",

abstract = "We have extended earlier measurements of the magnetoresistance in a periodically modulated two-dimensional electron gas to high magnetic fields, where the cyclotron radius, r(c), is much smaller than the period, a, of modulation. A giant nonoscillatory magnetoresistance was found to arise beyond the range of low-field (Weiss) oscillations periodic in 1/B. Its value in a magnetic field of a few tesla may exceed the zero-field resistance value, rho-0, by 1 to 2 orders of magnitude. This result is in agreement with the semiclassical theory by Beenakker, if a modulation of the electron mobility is taken into account.",

keywords = "superlattice, oscillations, orbits",

author = "Geim, \{A K\} and R Taboryski and A Kristensen and Dubonos, \{S V\} and Lindelof, \{P E\}",

note = "Jj846 Times Cited:20 Cited References Count:11",

year = "1992",

language = "English",

volume = "46",

pages = "4324--4327",

journal = "Physical Review B",

issn = "2469-9969",

publisher = "American Physical Society",

number = "7",

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TY - JOUR

T1 - High-Field Magnetoresistance in a Periodically Modulated 2-Dimensional Electron-Gas

AU - Geim, A K

AU - Taboryski, R

AU - Kristensen, A

AU - Dubonos, S V

AU - Lindelof, P E

N1 - Jj846 Times Cited:20 Cited References Count:11

PY - 1992

Y1 - 1992

N2 - We have extended earlier measurements of the magnetoresistance in a periodically modulated two-dimensional electron gas to high magnetic fields, where the cyclotron radius, r(c), is much smaller than the period, a, of modulation. A giant nonoscillatory magnetoresistance was found to arise beyond the range of low-field (Weiss) oscillations periodic in 1/B. Its value in a magnetic field of a few tesla may exceed the zero-field resistance value, rho-0, by 1 to 2 orders of magnitude. This result is in agreement with the semiclassical theory by Beenakker, if a modulation of the electron mobility is taken into account.

AB - We have extended earlier measurements of the magnetoresistance in a periodically modulated two-dimensional electron gas to high magnetic fields, where the cyclotron radius, r(c), is much smaller than the period, a, of modulation. A giant nonoscillatory magnetoresistance was found to arise beyond the range of low-field (Weiss) oscillations periodic in 1/B. Its value in a magnetic field of a few tesla may exceed the zero-field resistance value, rho-0, by 1 to 2 orders of magnitude. This result is in agreement with the semiclassical theory by Beenakker, if a modulation of the electron mobility is taken into account.

KW - superlattice

KW - oscillations

KW - orbits

M3 - Article

SN - 2469-9969

VL - 46

SP - 4324

EP - 4327

JO - Physical Review B

JF - Physical Review B

IS - 7

ER -

High-Field Magnetoresistance in a Periodically Modulated 2-Dimensional Electron-Gas

Abstract

Keywords

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