Emergent magnetic monopoles and their dynamics in solids

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H05456
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: Kanazawa Naoya 東京大学, 大学院工学系研究科(工学部), 助教 (10734593)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: トポロジー / 強相関電子系 / 物性実験 / キラル磁性体 / モノポール / スピントロニクス

Outline of Final Research Achievements

Elementary particles with electric charges, such as protons and electrons, are fundamental particles, forming our world. In contrast, magnetic monopoles with magnetic charges, i.e., particles as sources or sinks of magnetic field, have not been identified so far. The classical electromagnetism is therefore structured under assumption of their non-existence. However, it is theoretically proposed that we can create fictitious magnetic monopoles in materials by utilizing the geometric phase of electrons. In this research project, we have focused on topology of spin textures and realized emergence of magnetic monopoles and novel electromagnetic effects associated with their pair-annihilation dynamics.

Free Research Field

物性物理学