Abstract
The interface between classical and quantum physics has always been an interesting area, but its importance has grown with the current explosive thrusts in nanoscience. Taking devices to the limit of miniaturization where quantum effects become important makes it essential to understand the interplay between classical macroscopic properties and microscopic quantum properties. This is particularly true in nanomagnetism, where many potential applications require monodisperse, magnetic nanoparticles. One source of such species are single-molecule magnets (SMMs), individual molecules that function as single-domain magnetic particles. Below their blocking temperature, they exhibit magnetization hysteresis, the classical macroscale property of a magnet, as well as quantum tunneling of magnetization (QTM) and quantum phase interference, as properties of a micro-scale entity. Quantum tunneling is advantageous for some potential applications of single-molecule magnets, for example in providing the quantum superposition of states for quantum computing, but is a disadvantage in others such as information storage. This chapter introduces the basic concepts that are needed to understand the quantum phenomena observed in molecular nanomagnets.
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Wernsdorfer, W. (2006). Molecular Nanomagnets. In: Sellmyer, D., Skomski, R. (eds) Advanced Magnetic Nanostructures. Springer, Boston, MA. https://doi.org/10.1007/0-387-23316-4_6
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