کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1554128 998771 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensing domain wall pinning in the longitudinal magnetoresistance of a two-dimensional electron gas
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Sensing domain wall pinning in the longitudinal magnetoresistance of a two-dimensional electron gas
چکیده انگلیسی

We investigate the sensing of domain wall pinning in thin Co wires positioned on top of a two-dimensional electron gas (2DEG) heterostructure by measuring the longitudinal resistance of the 2DEG as the magnetic field is swept, in an analogy to the Barkhausen effect. For comparison, we also measure the magnetoresistance of the ferromagnetic film in the same device in a subsequent sweep. Compared to the Hall measurements, the longitudinal measurement has the advantage of sensing magnetic activity over longer lengths, while compared to the measurement of the magnetoresistance in the ferromagnetic wire, it offers complementary information related to the pinning and unpinning of the domain wall, due to its sensitivity only to the out-of-plane magnetic field component.


► Domain wall pinning is sensed into longitudinal resistance of 2DEG placed along a ferromagnetic wire.
► The method shows good sensitivity over long paths.
► Domain wall pining reflects in maxima in magnetoresistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 52, Issue 1, July 2012, Pages 11–15
نویسندگان
, , , , , , ,