Ultrahigh current densities in Permalloy nanowires on diamond

被引：11
|
作者：
Hankemeier, S. [1 ]
Sachse, K. [1 ]
Stark, Y. [1 ]
Froemter, R. [1 ]
Oepen, H. P. [1 ]
机构：
[1] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 24期
关键词：
Current density;
D O I：
10.1063/1.2937842
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To study the forces of spin polarized currents on domain walls in the microscopic scale, dc densities in the order of 10(12) A/m(2) are required. In general, current densities of this magnitude cause a rapid destruction of metallic wires. We present a device that allows us to apply current densities of 1.5x10(12) A/m(2) for more than an hour without degradation in the wire, using a diamond substrate as heat spreader. Annealing effects are observed and the wire temperature is measured and modeled as function of the current density. (C) 2008 American Institute of Physics.
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页数：3
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