Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-06-22
J. Am. Chem. Soc. 127, 3650 (2005)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Received November 26, 2004; Published on Web February 23, 2005
Scientific paper
10.1021/ja0428661
The first measurements of magnetization hysteresis loops on 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.
Ishikawa Naoto
Sugita Mitsuro
Wernsdorfer Wolfgang
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