Observation of giant magnetoresistance due to open orbits in hybrid semiconductor/ferromagnet devices

Alain Nogaret; S Carlton; B Gallagher; pc main; M Henini; R Wirtz; R Newbury; MA Howson; sp beaumont

doi:10.1103/PhysRevB.55.R16037

Observation of giant magnetoresistance due to open orbits in hybrid semiconductor/ferromagnet devices

Alain Nogaret, S Carlton, B Gallagher, pc main, M Henini, R Wirtz, R Newbury, MA Howson, sp beaumont

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Abstract

We have investigated the magnetoresistance of a heterostructure containing a near surface two-dimensional electron gas subject to a periodic magnetic field that alternates in sign. The field is produced by an array of submicrometer ferromagnets fabricated on the surface of the heterostructure. We observe a giant low-field magnetoresistance due to electrons propagating in open orbits along lines of zero magnetic field. We are able to account for the observed form and magnitude of this magnetoresistance in a semiclassical model.

Original language	English
Pages (from-to)	16037-16040
Number of pages	4
Journal	Physical Review B : Condensed Matter and Materials Physics
Volume	55
DOIs	https://doi.org/10.1103/PhysRevB.55.R16037
Publication status	Published - 15 Jun 1997

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abstract = "We have investigated the magnetoresistance of a heterostructure containing a near surface two-dimensional electron gas subject to a periodic magnetic field that alternates in sign. The field is produced by an array of submicrometer ferromagnets fabricated on the surface of the heterostructure. We observe a giant low-field magnetoresistance due to electrons propagating in open orbits along lines of zero magnetic field. We are able to account for the observed form and magnitude of this magnetoresistance in a semiclassical model. ",

author = "Alain Nogaret and S Carlton and B Gallagher and pc main and M Henini and R Wirtz and R Newbury and MA Howson and sp beaumont",

year = "1997",

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doi = "10.1103/PhysRevB.55.R16037",

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T1 - Observation of giant magnetoresistance due to open orbits in hybrid semiconductor/ferromagnet devices

AU - Nogaret, Alain

AU - Carlton, S

AU - Gallagher, B

AU - main, pc

AU - Henini, M

AU - Wirtz, R

AU - Newbury, R

AU - Howson, MA

AU - beaumont, sp

PY - 1997/6/15

Y1 - 1997/6/15

N2 - We have investigated the magnetoresistance of a heterostructure containing a near surface two-dimensional electron gas subject to a periodic magnetic field that alternates in sign. The field is produced by an array of submicrometer ferromagnets fabricated on the surface of the heterostructure. We observe a giant low-field magnetoresistance due to electrons propagating in open orbits along lines of zero magnetic field. We are able to account for the observed form and magnitude of this magnetoresistance in a semiclassical model.

AB - We have investigated the magnetoresistance of a heterostructure containing a near surface two-dimensional electron gas subject to a periodic magnetic field that alternates in sign. The field is produced by an array of submicrometer ferromagnets fabricated on the surface of the heterostructure. We observe a giant low-field magnetoresistance due to electrons propagating in open orbits along lines of zero magnetic field. We are able to account for the observed form and magnitude of this magnetoresistance in a semiclassical model.

U2 - 10.1103/PhysRevB.55.R16037

DO - 10.1103/PhysRevB.55.R16037

M3 - Article

SN - 0163-1829

VL - 55

SP - 16037

EP - 16040

JO - Physical Review B : Condensed Matter and Materials Physics

JF - Physical Review B : Condensed Matter and Materials Physics

ER -

Observation of giant magnetoresistance due to open orbits in hybrid semiconductor/ferromagnet devices

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