21st CEMS Colloquium


加藤 礼三 (理化学研究所 加藤分子物性研究室 主任研究員)


2014年10月15日(水) 17:30~18:30


理化学研究所 大河内ホール




Molecular conductors have been characterized by simple and clear electronic structures where a conduction band originates from one of frontier molecular orbitals (HOMO or LUMO) and the tight-binding band picture works quite well. Recently, however, it has been reported that an increasing number of molecular conductors have more than two bands near the Fermi level and the multi-band interactions provide unique physical properties. I will introduce the following two types of multi-band molecular conductors based on metal dithiolene complexes;
(1) Frustrated dimer-Mott system where a quantum spin liquid state competes with various electronic phases including antiferromagnetic order, charge order, and valence bond order.
(2) Single-component molecular conductors that possibly have the Dirac cone structure.