学部・大学院区分
Undergraduate / Graduate

理・博前

時間割コード
Registration Code

2680546

科目区分
Course Category

前期専門科目
MC Specialized Course

科目名　【日本語】
Course Title

[G30] 電子物性学特別講義

科目名　【英語】
Course Title

[G30] Special Lecture on Electonic Properties of Matter

コースナンバリングコード
Course Numbering Code

担当教員　【日本語】
Instructor

河野浩 ○ 速水賢

担当教員　【英語】
Instructor

KOHNO Hiroshi ○ HAYAMI Satoru

単位数
Credits

開講期・開講時間帯
Term / Day / Period

秋集中その他その他
Intensive(Fall) Other Other

授業形態
Course style

講義
Lecture

学科・専攻
Department / Program

理学専攻

必修・選択
Required / Selected

選択

授業の目的　【日本語】
Goals of the Course(JPN)

授業の目的　【英語】
Goals of the Course

In solids, a variety of physical properties, such as superconductivity, magnetism, and dielectricity, emerge. In recent years, many more exotic properties have been reported, making it challenging for beginners to grasp the relationships between these different physical phenomena. However, many of these properties can often be classified based on differences in how symmetry is broken in electronic systems.

This lecture aims to introduce the concept of "multipoles", which can describe anisotropic charge and current distributions, and apply it to microscopic electronic degrees of freedom. By doing so, we will demonstrate how various physical phenomena can be understood from a unified perspective. We also plan to mention the connection to altermagnets, which have attracted considerable attention in recent years.

到達目標　【日本語】
Objectives of the Course(JPN))

到達目標　【英語】
Objectives of the Course

Master multipole representation theory in strongly correlated electron systems. Apply this approach to gain a deeper understanding of cross-correlation responses and quantum transport phenomena. In addition, study its connection to altermagnets.

授業の内容や構成
Course Content / Plan

1. Why multipoles? (Explain the benefits of learning multipole representation theory in strongly correlated electron systems)
2. Fundamentals of group theory (Explain the essential group theory knowledge required to understand multipoles)
3. Symmetry and multipole (Explain the relationship between symmetry and multipoles in materials)
4. Band structure (Explain how the band structure of an electronic system is affected when multipole order emerges)
5. Cross-correlation response (Explain how using the multipole representation for a systematic understanding of the conditions for the emergence of multiferroic phenomena and nonlinear transport phenomena)
6. Microscopic expressions (Explain the relationship between microscopic electronic degrees of freedom and multipoles)
7. Theoretical model analysis based on multipoles (Introduce how multipole representation theory provides useful insights for theoretical model analysis)
8. Latest application to altermagnetism (Introduce examples of applying multipole representation theory to altermagnets)

履修条件
Course Prerequisites