Study of the phase diagram of a correlated-electron superconductor with a triangular lattice and search for chiral superconductivity

2015 Fiscal Year Final Research Report

• Project/Area Number: 25287082
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Tokyo University of Science (2014-2015); The University of Tokyo (2013)
• Principal Investigator: Itou Tetsuaki 東京理科大学, 理学部, 准教授 (50402748)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 超伝導 / 強相間電子系 / 分子性物質

Outline of Final Research Achievements

It has been well recognized that magnetic systems with triangular lattices shows the geometrical frustration effect, which destabilizes the simple Neel ground state and can lead to a new exotic ground state. This work aims at expanding the geometrical frustration concept into the areas of itinerant electron and superconducting systems, and discovering a new quantum state of matter such as exotic superconductivity. For this purpose, NMR and ac susceptibility measurements have been performed for several materials with frustrated lattices. The experimental results give strong indication for a possible triplet superconductivity in an organic system with a triangular lattice.

Free Research Field

物性物理学