2005/02/23 by N. Ishikawa, Naoto Ishikawa, M. Sugita +3
Materials Science · Physics and Astronomy · #Magnetism in coordination complexes #Organic and Molecular Conductors Research #Porphyrin and Phthalocyanine Chemistry #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1021/ja0428661
published as J. Am. Chem. Soc. 127, 3650 (2005) · Received November 26, 2004; Published on Web February 23, 2005
openalex publication_date 2005/02/23 · arxiv created 2005/06/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The first measurements of magnetization hysteresis loops on a diluted single crystal of [(Pc)2Ho]-.TBA+ (Pc = phthalocyaninato, TBA = tetrabutylammonium) in the subkelvin temperature range are reported. Characteristic staircase-like structure was observed, indicating the occurrence of the quantum tunneling of magnetization (QTM), which is a characteristic feature of SMMs. The quantum process in the new lanthanide SMMs is due to resonant quantum tunneling between entangled states of the electronic and nuclear spin systems, which is an essentially different mechanism from those of the known transition-metal-cluster SMMs. Evidence of the two-body quantum process was also observed for the first time in lanthanide complex systems.