Abstract
We investigate a new type of magnetoresistance(MR) in which the resistivity of a near-surface two-dimensional electron gas is controlled by the magnetization of a submicron ferromagneticgrating defined on the surface of the device. We observe an increase in resistance of up to ∼1500% at a temperature of 4 K and ∼1% at 300 K. The magnitude and temperature dependence of the MR are well accounted for by a semiclassical theory. Optimization of device parameters is expected to increase considerably the magnitude of the room temperature MR.
Original language | English |
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Pages (from-to) | 1724-1726 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 72 |
Issue number | 14 |
DOIs | |
Publication status | Published - 6 Apr 1998 |