Tailoring interacting magnetic nanodots via dimensionality variation of mediating electrons
Tailoring interacting magnetic nanodots via dimensionality variation of mediating electrons
Li-feng YIN1, Jian SHEN1,2()
1. Department of Physics, Fudan University, Shanghai 200433, China; 2. Department of Physics and Astronomy, The University of Tennessee, Knoxville, TN 37966, USA
Nature produces ferromagnetic materials based on nearest neighbor exchange interaction between atomic spins. For artificially fabricated nanomagnets, it is those “small” magnetic energies, e.g. anisotropy, dipolar interaction and indirect exchange interaction that play crucial roles against the thermal fluctuation. We have developed strong capabilities to grow nanodot assemblies in ultrahigh vacuum with controllable size and density on/in both metallic and insulating templates. Based on our novel synthesis capability, we have studied artificial nanomagnets with tunable coupling strength via dimensionality control of the mediating electrons in one-dimensional (1-D), 2-D, and 3-D. We show that such kind of dimensional confinement provides a unique way to induce novel magnetic properties and to gain control of them. The research outlined in this work provides the science base to understand, modify, and manipulate the magnetic properties through dimensional confinement.
. Tailoring interacting magnetic nanodots via dimensionality variation of mediating electrons[J]. Frontiers of Physics in China, 2010, 5(4): 393-404.
Li-feng YIN, Jian SHEN. Tailoring interacting magnetic nanodots via dimensionality variation of mediating electrons. Front Phys Chin, 2010, 5(4): 393-404.
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