权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Systematic understanding of cross-correlated coupling and quantum transport based on augmented multipoles and exploring for functional materials

基于增广多极子的互相关耦合与量子输运的系统理解及功能材料的探索

基本信息

批准号：
21H01037
负责人：
速水賢
金额：
$ 9.98万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2025-03-31
项目状态：
未结题

项目摘要

物性物理における多彩な機能物性の発現は、系のマクロな対称性により予測されるが、より高機能・高効率な物質設計へとつなげていくためには、それらの発現に本質的なミクロな電子自由度の役割を理解する必要がある。本研究の目的は、結晶中における電子自由度を統一的に表現できる “拡張多極子”を用いることで、従来の群論による「マクロな対称性⇔物性」の枠組みを超えて「ミクロな電子自由度⇔物性」という電子自由度に立脚した新しい理論形式を構築することである。本年度においては、新しい多極子自由度である電気トロイダル多極子や磁気トロイダル多極子を伴う秩序状態の発現によって現れる交差相関応答および量子伝導に関する知見を得ることを目指した。具体的な研究成果を以下に示す。(1) 磁気トロイダル双極子秩序下における非線形・非相反伝導の理論、(2) 磁気トロイダル四極子を伴う反強磁性体におけるスピン流生成機構の発見、(3) 電気トロイダル双極子秩序下における反対称熱分極の理論、(4) PT対称な反強磁性体における非線形スピンホール効果の定式化、(5) スピン軌道相互作用に頼らない非相反伝導機構の発見、(6) 多極子秩序候補物質CeCoSiに対する平均場計算を用いた有限温度-磁場相図の作成、(7) フェロアキシャルモーメントと磁気渦の関係性の理解、(8) 電気トロイダル双極子秩序下におけるスピン流生成、(9) 磁気トロイダル双極子秩序を示す候補物質Ce3TiBi5に対する模型計算、(10) 電気トロイダル双極子秩序を示す候補物質であるCa5Ir3O12に対する模型計算、(11) 電気トロイダル双極子秩序下における非線形磁化率の定式化と解析、(12) らせん対称性を有する格子模型における磁気スキルミオン結晶の安定化機構の発見、(13) 強磁性-反強磁性接合を利用した磁気スキルミオン結晶の発現に関する理論提案。

Physical properties, physical properties, mechanical properties, thermal In this study, the purpose of this study is to show that the system of degrees of freedom of electronics. in this study, the purpose of this study is to show that the system of degrees of freedom of electronics. in this study, the purpose of this study is to show that the theory of the degree of freedom of electrons is based on the theory of the degree of freedom of electrons. in this study, the purpose of this study is to analyze the physical properties of the degree of freedom of electrons. This year, there are many degrees of freedom in the current year. This year, there are multiple degrees of freedom in electrical engineering. In this year, there are multiple degrees of freedom in the current year. The specific "research results" are shown below. (1) the theory of non-converse guiding theory, (2) the mechanism of generating the flow of the magnetic body with the reverse magnetic body, (3) the theory and theory of the current generation of the magnetic field, (1) the non-inverse guiding theory, (2) the mechanism of generating the flow of the magnetic body, and (3) the theory and theory of the current generation mechanism in the double order of the magnetic field, (1) the non-opposite guiding theory, (2) the mechanism of generating the flow of the magnetic body, and (3) the theory of the current generation mechanism, and (3) the theory and theory of the current generation mechanism. (4) the anti-strong magnetic body is known as the inverse magnetic body. (5) the interaction between the magnetic field and the magnetic field is modeled. (5) the interaction between the magnetic field and the magnetic field is not the opposite. (6) the average calculation of the multi-order CeCoSi magnetic field is made by using the finite temperature-magnetic field correlation, (7) the magnetic properties are understood and understood. (8) the generation of thermal currents in the double order of electrical equipment, (9) the calculation of the model of Ce3TiBi5, (10) the calculation of the model of Ca5Ir3O12, (11) the analysis and analysis of the stereotyped magnetic susceptibility in the double order of electrical and electronic equipment. (12) the symmetry of the structure is different from that of the lattice model, and the structure of the stability mechanism is not seen. (13) the strong magnetic-anti-strong magnetic joint is used to realize the theoretical proposal of the mechanical theory.