Observation of giant magnetoresistance due to open orbits in hybrid semiconductor/ferromagnet devices
Observation of giant magnetoresistance due to open orbits in hybrid semiconductor/ferromagnet devices
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DOI：
10.1103/physrevb.55.r16037
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发表时间：
1997-06
影响因子：
3.7
通讯作者：
A. Nogaret;S. Carlton;B. Gallagher;P. Main;M. Henini;R. Wirtz;R. Newbury;M. Howson;S. Beaumont
中科院分区：
文献类型：
--
作者：
A. Nogaret;S. Carlton;B. Gallagher;P. Main;M. Henini;R. Wirtz;R. Newbury;M. Howson;S. Beaumont
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.
