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MnAs-based surface half-metallic preparation process

A preparation process and semi-metal technology, which is applied in the field of preparation process based on the surface semi-metallicity of MnAs, can solve problems such as backward methods, and achieve the effect of good market application value.

Inactive Publication Date: 2018-08-03
XUCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the existing process method is backward and needs to be improved

Method used

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  • MnAs-based surface half-metallic preparation process
  • MnAs-based surface half-metallic preparation process
  • MnAs-based surface half-metallic preparation process

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Embodiment Construction

[0018] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0020] Unless otherwise defined, all technical and sc...

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Abstract

The invention discloses a MnAs-based surface half-metallic preparation process. The process comprises the following steps of 1, establishing a zinc blende type MnAs crystal structure and performing optimization on the lattice structure; 2, performing calculation and analysis on the MnAs state density in a balance lattice constant aeq; 3, establishing two kinds of interface structures in a direction of MnAs (001) and performing optimization; 4, performing calculation and analysis on the state density of the optimized surface structure; and 5, by performing analysis and comparison, obtaining a surface structure with the half-metallic characteristic. By adoption of the scheme, many advantages of a spinning electronic device can be given into full play, so that the preparation process has quite high market application value.

Description

technical field [0001] The invention relates to a preparation process based on the semimetallic property of the MnAs surface. Background technique [0002] It is well known that obtaining high spin-polarized current is a key factor for the application of spintronic devices such as spin valves and spin filters. With 100% spin polarization, half-metallic materials can be regarded as ideal injection sources for spin injection from ferromagnets to semiconductors. Therefore, finding and synthesizing semi-metallic materials has become a concern of many theoretical and experimental workers. So far, many kinds of compounds have been found to be half-metallic ferromagnets, such as: rutile CrO 2 , transition metal carbon-sulfur compounds of sphalerite, semi- or full-Heusler alloys, and carbon-nitrogen-alkaline earth metal compounds of rock-salt structure. Among these half-metallic ferromagnets, sphalerite carbonitrides are considered to be very good spin-injection materials due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L43/12H01L43/10H10N50/01
CPCH10N50/85H10N50/01
Inventor 韩红培
Owner XUCHANG UNIV
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