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Your search keyword '"Levy, P.M."' showing total 32 results
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32 results on '"Levy, P.M."'

2. Ab initio nonequilibrium calculation of magnetic tunnel junctions

Author

Uiberacker, C., Wang, K., Heide, C., and Levy, P.M.

Subjects
Magnetism -- Research, Tunneling (Physics) -- Research, Physics
Abstract

It has been possible to obtain a nonequilibrium band-structure measurement of a magnetic tunnel junction. It was established that the current is determined by the surface density of states and the bias dependence of the barrier.

Published
2001

3. Magnetoresistance due to domain walls in micron scale Fe wires with stripe domains

Author

Kent, A.D., Ruediger, U., Yu, J., Zhang, S., Levy, P.M., Zhong, Y., and Parkin, S.S.P.

Subjects
Iron -- Magnetic properties, Domain structure -- Analysis, Ferromagnetism -- Measurement, Business, Electronics, Electronics and electrical industries
Abstract

The magnetoresistance (MR) associated with domain boundaries has been investigated in microfabricated bcc Fe (0.65 to 20 [micro]m linewidth) wires with controlled stripe domains. Domain configurations have been characterized using MFM. MR measurements as a function of field angle, temperature and domain configuration are used to estimate MR contributions due to resistivity anisotropy and domain walls. Evidence is presented that domain boundaries enhance the conductivity in such microstructures over a broad range of temperatures (1.5 K to 80 K). Index Terms - Domain Walls, Fe, MR.

Published
1998

28. Giant magnetoresistance in magnetic layered and granular materials.

Author

Levy, P.M.

Subjects
*MAGNETISM
Abstract

Examines magnetoresistance, the change in electrical resistance of a material in response to a magnetic field. Application to magnetic media such as computer hard disks; Application to atomically engineered materials; Superlattices; Original observations; New window opened on giant magnetoresistance; Rapid developments anticipated.

Published
1992
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