Magnetic and transport properties of Mn2CoAl oriented films

被引：103
|
作者：
Jamer, Michelle E. [1 ]
Assaf, Badih A. [1 ]
Devakul, Trithep [1 ]
Heiman, Don [1 ]
机构：
[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 14期
基金：
美国国家科学基金会;
关键词：
ELECTRICAL-RESISTIVITY; SCATTERING;
D O I：
10.1063/1.4823601
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The structure, magnetic, and transport properties of thin films of the Heusler ferrimagnet Mn2CoAl have been investigated for properties related to spin gapless semiconductors. Oriented films were grown by molecular beam epitaxy on GaAs substrates and the structure was found to transform from tetragonal to cubic for increasing annealing temperature. The anomalous Hall resistivity is found to be proportional to the square of the longitudinal resistivity and magnetization expected for a topological Berry curvature origin. A delicate balance of the spin-polarized carrier type when coupled with voltage gate-tuning could significantly impact advanced electronic devices. (C) 2013 AIP Publishing LLC.
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页数：5
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