Theoretical study on f-electron superlattice

2017 Fiscal Year Final Research Report

• Project/Area Number: 26800177
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: Tada Yasuhiro 東京大学, 物性研究所, 助教 (20609937)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 超格子 / ｆ電子 / 電子相関 / 超伝導 / 磁性 / 近藤効果

Outline of Final Research Achievements

In this project, we have studied correlation effects in f-electron superlattices. We have investigated (1) Kondo effect and electrical resistivity, (2) antiferromagnetism and superconductivity, and (3) ferromagnetism. (1) Impacts of superlattice structures on Kondo effect have been examined. Resistivity of the heavy fermions formed in the superlattice was also studied. (2) We have discussed the competition between antiferromagnetic RKKY interaction and Kondo effect. Superconductivity mediated by itinerant spin fluctuations was also discussed. (3) We have studied a possible ferromagnetic quantum critical point and magnetoresistance in Kondo superlattices.

Free Research Field

磁性、超伝導、電子相関